Is 80000 a prime number?

No. 80000 is composite — it has more than 2 divisors (it has 40).

Divisors of 80000: All 40 Factors

Q: What are the divisors of 80000?

The divisors (factors) of 80000 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 8000, 10000, 16000, 20000, 40000, 80000.

Q: What is the sum of the divisors of 80000?

The sum is 1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 25 + 32 + 40 + 50 + 64 + 80 + 100 + 125 + 128 + 160 + 200 + 250 + 320 + 400 + 500 + 625 + 640 + 800 + 1000 + 1250 + 1600 + 2000 + 2500 + 3200 + 4000 + 5000 + 8000 + 10000 + 16000 + 20000 + 40000 + 80000 = 199155.

Quick Answer

80000 has 40 divisors (factors): 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 8000, 10000, 16000, 20000, 40000, 80000.

Sum: 199155.

Divisors (Factors) Calculator

Divisors Multiples Prime Factoriz. GCF LCM

Use the calculator above to find all divisors (also called factors) of any positive integer up to 4,782,969. Beyond the divisor list, this tool also shows divisor pairs, the sum and count of divisors, prime factorization, and number properties (prime, perfect square, perfect number).

All Divisors of 80000

The number 80000 has 40 divisors:

1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 8000, 10000, 16000, 20000, 40000, 80000

Divisor Pairs of 80000

Each pair multiplies to 80000:

Factor 1	×	Factor 2	=	Product
1	×	80000	=	80000
2	×	40000	=	80000
4	×	20000	=	80000
5	×	16000	=	80000
8	×	10000	=	80000
10	×	8000	=	80000
16	×	5000	=	80000
20	×	4000	=	80000
25	×	3200	=	80000
32	×	2500	=	80000
40	×	2000	=	80000
50	×	1600	=	80000
64	×	1250	=	80000
80	×	1000	=	80000
100	×	800	=	80000
125	×	640	=	80000
128	×	625	=	80000
160	×	500	=	80000
200	×	400	=	80000
250	×	320	=	80000

Number of Divisors

The number 80000 has 40 divisors, written as τ(80000) = 40 in number theory.

Sum of Divisors

σ(80000) = 1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 25 + 32 + 40 + 50 + 64 + 80 + 100 + 125 + 128 + 160 + 200 + 250 + 320 + 400 + 500 + 625 + 640 + 800 + 1000 + 1250 + 1600 + 2000 + 2500 + 3200 + 4000 + 5000 + 8000 + 10000 + 16000 + 20000 + 40000 + 80000 = 199155

Prime Factorization of 80000

See the full prime factorization calculator →

Properties of 80000

80000 is composite.
80000 is not a perfect square.
Number of divisors: 40.
Sum of divisors: 199155.

Common Divisors with Another Number?

Looking for the divisors that 80000 shares with another number? Use our Greatest Common Factor (GCF) calculator — it finds all common divisors and the largest one.

Step-by-Step: How to Find the Divisors of 80000

An efficient way to find divisors uses the complementary pair trick: check each integer i from 1 to √80000 ≈ 282.84. If i divides 80000, then both i and 80000/i are divisors.

1 divides 80000 (80000 ÷ 1 = 80000) → pair (1, 80000)
2 divides 80000 (80000 ÷ 2 = 40000) → pair (2, 40000)
4 divides 80000 (80000 ÷ 4 = 20000) → pair (4, 20000)
5 divides 80000 (80000 ÷ 5 = 16000) → pair (5, 16000)
8 divides 80000 (80000 ÷ 8 = 10000) → pair (8, 10000)
10 divides 80000 (80000 ÷ 10 = 8000) → pair (10, 8000)
16 divides 80000 (80000 ÷ 16 = 5000) → pair (16, 5000)
20 divides 80000 (80000 ÷ 20 = 4000) → pair (20, 4000)
25 divides 80000 (80000 ÷ 25 = 3200) → pair (25, 3200)
32 divides 80000 (80000 ÷ 32 = 2500) → pair (32, 2500)
40 divides 80000 (80000 ÷ 40 = 2000) → pair (40, 2000)
50 divides 80000 (80000 ÷ 50 = 1600) → pair (50, 1600)
64 divides 80000 (80000 ÷ 64 = 1250) → pair (64, 1250)
80 divides 80000 (80000 ÷ 80 = 1000) → pair (80, 1000)
100 divides 80000 (80000 ÷ 100 = 800) → pair (100, 800)
125 divides 80000 (80000 ÷ 125 = 640) → pair (125, 640)
128 divides 80000 (80000 ÷ 128 = 625) → pair (128, 625)
160 divides 80000 (80000 ÷ 160 = 500) → pair (160, 500)
200 divides 80000 (80000 ÷ 200 = 400) → pair (200, 400)
250 divides 80000 (80000 ÷ 250 = 320) → pair (250, 320)
Collect all unique values: {1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 8000, 10000, 16000, 20000, 40000, 80000} — total 40 divisors.
Sum: 1 + 2 + 4 + 5 + 8 + 10 + 16 + 20 + 25 + 32 + 40 + 50 + 64 + 80 + 100 + 125 + 128 + 160 + 200 + 250 + 320 + 400 + 500 + 625 + 640 + 800 + 1000 + 1250 + 1600 + 2000 + 2500 + 3200 + 4000 + 5000 + 8000 + 10000 + 16000 + 20000 + 40000 + 80000 = 199155.

Nearby Examples

n	divisors count	sum σ(n)
360	24	1170
240	20	744
180	18	546
144	15	403
120	16	360
100	9	217
90	12	234
84	12	224

Related Operations for 80000

Multiples of a Number — "outward" complement of divisors
80000 Prime Factorization — decompose into prime building blocks
Find GCF of 80000 and another number
Find LCM of 80000 and another number
Is 80000 a perfect square? (odd divisor count ⇔ yes)

What Is a Divisor?

A divisor (also called a factor) of a positive integer n is any positive integer d such that n ÷ d has no remainder. In other words, d divides n evenly.

Every positive integer n has at least two divisors: 1 and n itself (with 1 being the trivial case of having only itself). Numbers with exactly 2 divisors are prime; numbers with 3 or more divisors are composite.

Why use this calculator? Beyond just listing divisors, this tool computes the sum σ(n), the count τ(n), prime factorization, divisor pairs (useful for visual learners and factoring problems), and detects whether n is a prime, a perfect square, or a perfect number.

References

Divisors Calculation Examples

Find all divisors of these numbers:

Related Calculators

Multiples of a Number — "outward" complement
Prime Factorization — product of prime divisors
Greatest Common Factor (GCF) — largest common divisor of 2+ numbers
Least Common Multiple (LCM) — smallest common multiple
Is N a Perfect Square? — odd divisor count check