Divisors of 20520: All 64 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 20520

The number 20520 has 64 divisors:

1,  2,  3,  4,  5,  6,  8,  9,  10,  12,  15,  18,  19,  20,  24,  27,  30,  36,  38,  40,  45,  54,  57,  60,  72,  76,  90,  95,  108,  114,  120,  135,  152,  171,  180,  190,  216,  228,  270,  285,  342,  360,  380,  456,  513,  540,  570,  684,  760,  855,  1026,  1080,  1140,  1368,  1710,  2052,  2280,  2565,  3420,  4104,  5130,  6840,  10260,  20520

Divisor Pairs of 20520

Each pair multiplies to 20520:

Number of Divisors

The number 20520 has 64 divisors, written as τ(20520) = 64 in number theory.

Sum of Divisors

σ(20520) = 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 + 10 + 12 + 15 + 18 + 19 + 20 + 24 + 27 + 30 + 36 + 38 + 40 + 45 + 54 + 57 + 60 + 72 + 76 + 90 + 95 + 108 + 114 + 120 + 135 + 152 + 171 + 180 + 190 + 216 + 228 + 270 + 285 + 342 + 360 + 380 + 456 + 513 + 540 + 570 + 684 + 760 + 855 + 1026 + 1080 + 1140 + 1368 + 1710 + 2052 + 2280 + 2565 + 3420 + 4104 + 5130 + 6840 + 10260 + 20520 = 72000

Prime Factorization of 20520

See the full prime factorization calculator →

Properties of 20520

• 20520 is composite.
• 20520 is not a perfect square.
• Number of divisors: 64.
• Sum of divisors: 72000.

Common Divisors with Another Number?

Looking for the divisors that 20520 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 20520

An efficient way to find divisors uses the complementary pair trick: check each integer i from 1 to √20520 ≈ 143.25. If i divides 20520, then both i and 20520/i are divisors.

1. 1 divides 20520 (20520 ÷ 1 = 20520) → pair (1, 20520)
2. 2 divides 20520 (20520 ÷ 2 = 10260) → pair (2, 10260)
3. 3 divides 20520 (20520 ÷ 3 = 6840) → pair (3, 6840)
4. 4 divides 20520 (20520 ÷ 4 = 5130) → pair (4, 5130)
5. 5 divides 20520 (20520 ÷ 5 = 4104) → pair (5, 4104)
6. 6 divides 20520 (20520 ÷ 6 = 3420) → pair (6, 3420)
7. 8 divides 20520 (20520 ÷ 8 = 2565) → pair (8, 2565)
8. 9 divides 20520 (20520 ÷ 9 = 2280) → pair (9, 2280)
9. 10 divides 20520 (20520 ÷ 10 = 2052) → pair (10, 2052)
10. 12 divides 20520 (20520 ÷ 12 = 1710) → pair (12, 1710)
11. 15 divides 20520 (20520 ÷ 15 = 1368) → pair (15, 1368)
12. 18 divides 20520 (20520 ÷ 18 = 1140) → pair (18, 1140)
13. 19 divides 20520 (20520 ÷ 19 = 1080) → pair (19, 1080)
14. 20 divides 20520 (20520 ÷ 20 = 1026) → pair (20, 1026)
15. 24 divides 20520 (20520 ÷ 24 = 855) → pair (24, 855)
16. 27 divides 20520 (20520 ÷ 27 = 760) → pair (27, 760)
17. 30 divides 20520 (20520 ÷ 30 = 684) → pair (30, 684)
18. 36 divides 20520 (20520 ÷ 36 = 570) → pair (36, 570)
19. 38 divides 20520 (20520 ÷ 38 = 540) → pair (38, 540)
20. 40 divides 20520 (20520 ÷ 40 = 513) → pair (40, 513)
21. 45 divides 20520 (20520 ÷ 45 = 456) → pair (45, 456)
22. 54 divides 20520 (20520 ÷ 54 = 380) → pair (54, 380)
23. 57 divides 20520 (20520 ÷ 57 = 360) → pair (57, 360)
24. 60 divides 20520 (20520 ÷ 60 = 342) → pair (60, 342)
25. 72 divides 20520 (20520 ÷ 72 = 285) → pair (72, 285)
26. 76 divides 20520 (20520 ÷ 76 = 270) → pair (76, 270)
27. 90 divides 20520 (20520 ÷ 90 = 228) → pair (90, 228)
28. 95 divides 20520 (20520 ÷ 95 = 216) → pair (95, 216)
29. 108 divides 20520 (20520 ÷ 108 = 190) → pair (108, 190)
30. 114 divides 20520 (20520 ÷ 114 = 180) → pair (114, 180)
31. 120 divides 20520 (20520 ÷ 120 = 171) → pair (120, 171)
32. 135 divides 20520 (20520 ÷ 135 = 152) → pair (135, 152)
33. Collect all unique values: {1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1080, 1140, 1368, 1710, 2052, 2280, 2565, 3420, 4104, 5130, 6840, 10260, 20520} — total 64 divisors.
34. Sum: 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 + 10 + 12 + 15 + 18 + 19 + 20 + 24 + 27 + 30 + 36 + 38 + 40 + 45 + 54 + 57 + 60 + 72 + 76 + 90 + 95 + 108 + 114 + 120 + 135 + 152 + 171 + 180 + 190 + 216 + 228 + 270 + 285 + 342 + 360 + 380 + 456 + 513 + 540 + 570 + 684 + 760 + 855 + 1026 + 1080 + 1140 + 1368 + 1710 + 2052 + 2280 + 2565 + 3420 + 4104 + 5130 + 6840 + 10260 + 20520 = 72000.

Nearby Examples

Related Operations for 20520

• Multiples of a Number — "outward" complement of divisors
• 20520 Prime Factorization — decompose into prime building blocks
• Find GCF of 20520 and another number
• Find LCM of 20520 and another number
• Is 20520 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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