Divisors of 31428: All 30 Factors

Divisors (Factors) Calculator

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 31428

The number 31428 has 30 divisors:

1,  2,  3,  4,  6,  9,  12,  18,  27,  36,  54,  81,  97,  108,  162,  194,  291,  324,  388,  582,  873,  1164,  1746,  2619,  3492,  5238,  7857,  10476,  15714,  31428

Divisor Pairs of 31428

Each pair multiplies to 31428:

Number of Divisors

The number 31428 has 30 divisors, written as τ(31428) = 30 in number theory.

Sum of Divisors

σ(31428) = 1 + 2 + 3 + 4 + 6 + 9 + 12 + 18 + 27 + 36 + 54 + 81 + 97 + 108 + 162 + 194 + 291 + 324 + 388 + 582 + 873 + 1164 + 1746 + 2619 + 3492 + 5238 + 7857 + 10476 + 15714 + 31428 = 83006

Prime Factorization of 31428

See the full prime factorization calculator →

Properties of 31428

• 31428 is composite.
• 31428 is not a perfect square.
• Number of divisors: 30.
• Sum of divisors: 83006.

Common Divisors with Another Number?

Looking for the divisors that 31428 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 31428

An efficient way to find divisors uses the complementary pair trick: check each integer i from 1 to √31428 ≈ 177.28. If i divides 31428, then both i and 31428/i are divisors.

1. 1 divides 31428 (31428 ÷ 1 = 31428) → pair (1, 31428)
2. 2 divides 31428 (31428 ÷ 2 = 15714) → pair (2, 15714)
3. 3 divides 31428 (31428 ÷ 3 = 10476) → pair (3, 10476)
4. 4 divides 31428 (31428 ÷ 4 = 7857) → pair (4, 7857)
5. 6 divides 31428 (31428 ÷ 6 = 5238) → pair (6, 5238)
6. 9 divides 31428 (31428 ÷ 9 = 3492) → pair (9, 3492)
7. 12 divides 31428 (31428 ÷ 12 = 2619) → pair (12, 2619)
8. 18 divides 31428 (31428 ÷ 18 = 1746) → pair (18, 1746)
9. 27 divides 31428 (31428 ÷ 27 = 1164) → pair (27, 1164)
10. 36 divides 31428 (31428 ÷ 36 = 873) → pair (36, 873)
11. 54 divides 31428 (31428 ÷ 54 = 582) → pair (54, 582)
12. 81 divides 31428 (31428 ÷ 81 = 388) → pair (81, 388)
13. 97 divides 31428 (31428 ÷ 97 = 324) → pair (97, 324)
14. 108 divides 31428 (31428 ÷ 108 = 291) → pair (108, 291)
15. 162 divides 31428 (31428 ÷ 162 = 194) → pair (162, 194)
16. Collect all unique values: {1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 97, 108, 162, 194, 291, 324, 388, 582, 873, 1164, 1746, 2619, 3492, 5238, 7857, 10476, 15714, 31428} — total 30 divisors.
17. Sum: 1 + 2 + 3 + 4 + 6 + 9 + 12 + 18 + 27 + 36 + 54 + 81 + 97 + 108 + 162 + 194 + 291 + 324 + 388 + 582 + 873 + 1164 + 1746 + 2619 + 3492 + 5238 + 7857 + 10476 + 15714 + 31428 = 83006.

Nearby Examples

Related Operations for 31428

• Multiples of a Number — "outward" complement of divisors
• 31428 Prime Factorization — decompose into prime building blocks
• Find GCF of 31428 and another number
• Find LCM of 31428 and another number
• Is 31428 a perfect square? (odd divisor count ⇔ yes)

See also our tables of divisors:

• Table of all divisors from 1 to 100
• Table of all divisors from 1 to 500
• Table of all divisors from 1 to 1,000
• Table of all divisors from 1 to 10,000

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

• [1] Divisor (Wikipedia)
• [2] Divisor function (Wikipedia)
• [3] Divisor (Wolfram MathWorld)

Divisors Calculation Examples

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