Divisors of 21024: All 36 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 21024

The number 21024 has 36 divisors:

1,  2,  3,  4,  6,  8,  9,  12,  16,  18,  24,  32,  36,  48,  72,  73,  96,  144,  146,  219,  288,  292,  438,  584,  657,  876,  1168,  1314,  1752,  2336,  2628,  3504,  5256,  7008,  10512,  21024

Divisor Pairs of 21024

Each pair multiplies to 21024:

Number of Divisors

The number 21024 has 36 divisors, written as τ(21024) = 36 in number theory.

Sum of Divisors

σ(21024) = 1 + 2 + 3 + 4 + 6 + 8 + 9 + 12 + 16 + 18 + 24 + 32 + 36 + 48 + 72 + 73 + 96 + 144 + 146 + 219 + 288 + 292 + 438 + 584 + 657 + 876 + 1168 + 1314 + 1752 + 2336 + 2628 + 3504 + 5256 + 7008 + 10512 + 21024 = 60606

Prime Factorization of 21024

See the full prime factorization calculator →

Properties of 21024

• 21024 is composite.
• 21024 is not a perfect square.
• Number of divisors: 36.
• Sum of divisors: 60606.

Common Divisors with Another Number?

Looking for the divisors that 21024 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 21024

An efficient way to find divisors uses the complementary pair trick: check each integer i from 1 to √21024 ≈ 145.00. If i divides 21024, then both i and 21024/i are divisors.

1. 1 divides 21024 (21024 ÷ 1 = 21024) → pair (1, 21024)
2. 2 divides 21024 (21024 ÷ 2 = 10512) → pair (2, 10512)
3. 3 divides 21024 (21024 ÷ 3 = 7008) → pair (3, 7008)
4. 4 divides 21024 (21024 ÷ 4 = 5256) → pair (4, 5256)
5. 6 divides 21024 (21024 ÷ 6 = 3504) → pair (6, 3504)
6. 8 divides 21024 (21024 ÷ 8 = 2628) → pair (8, 2628)
7. 9 divides 21024 (21024 ÷ 9 = 2336) → pair (9, 2336)
8. 12 divides 21024 (21024 ÷ 12 = 1752) → pair (12, 1752)
9. 16 divides 21024 (21024 ÷ 16 = 1314) → pair (16, 1314)
10. 18 divides 21024 (21024 ÷ 18 = 1168) → pair (18, 1168)
11. 24 divides 21024 (21024 ÷ 24 = 876) → pair (24, 876)
12. 32 divides 21024 (21024 ÷ 32 = 657) → pair (32, 657)
13. 36 divides 21024 (21024 ÷ 36 = 584) → pair (36, 584)
14. 48 divides 21024 (21024 ÷ 48 = 438) → pair (48, 438)
15. 72 divides 21024 (21024 ÷ 72 = 292) → pair (72, 292)
16. 73 divides 21024 (21024 ÷ 73 = 288) → pair (73, 288)
17. 96 divides 21024 (21024 ÷ 96 = 219) → pair (96, 219)
18. 144 divides 21024 (21024 ÷ 144 = 146) → pair (144, 146)
19. Collect all unique values: {1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 73, 96, 144, 146, 219, 288, 292, 438, 584, 657, 876, 1168, 1314, 1752, 2336, 2628, 3504, 5256, 7008, 10512, 21024} — total 36 divisors.
20. Sum: 1 + 2 + 3 + 4 + 6 + 8 + 9 + 12 + 16 + 18 + 24 + 32 + 36 + 48 + 72 + 73 + 96 + 144 + 146 + 219 + 288 + 292 + 438 + 584 + 657 + 876 + 1168 + 1314 + 1752 + 2336 + 2628 + 3504 + 5256 + 7008 + 10512 + 21024 = 60606.

Nearby Examples

Related Operations for 21024

• Multiples of a Number — "outward" complement of divisors
• 21024 Prime Factorization — decompose into prime building blocks
• Find GCF of 21024 and another number
• Find LCM of 21024 and another number
• Is 21024 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

Find all divisors of these numbers: