Factors of 920

920 has 16 factors: 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460 and 920. Its prime factorization is 2³ × 5 × 23.

Factor pairs of 920

Factor×FactorProduct
1×920920
2×460920
4×230920
5×184920
8×115920
10×92920
20×46920
23×40920

Negative pairs work too: (−1) × (−920), (−2) × (−460), … = 920.

Number of factors
16
Factor pairs
8
Sum of factors
2,160
Prime or composite
Composite
Even or odd
Even
Perfect square
No
Prime factorization 2³ × 5 × 23

How to find the factors of 920

Test every whole number from 1 up to the square root of 920 (√920 ≈ 30.332). Each number that divides evenly gives you two factors at once: the divisor and the quotient.

  • 920 ÷ 1 = 920 — so 1 and 920 are factors
  • 920 ÷ 2 = 460 — so 2 and 460 are factors
  • 920 ÷ 3 = 306.667 — not a whole number
  • 920 ÷ 4 = 230 — so 4 and 230 are factors
  • 920 ÷ 5 = 184 — so 5 and 184 are factors
  • 920 ÷ 6 = 153.333 — not a whole number
  • 920 ÷ 7 = 131.429 — not a whole number
  • 920 ÷ 8 = 115 — so 8 and 115 are factors
  • 920 ÷ 9 = 102.222 — not a whole number
  • 920 ÷ 10 = 92 — so 10 and 92 are factors
  • 920 ÷ 11 = 83.636 — not a whole number
  • 920 ÷ 12 = 76.667 — not a whole number
  • 920 ÷ 13 = 70.769 — not a whole number
  • 920 ÷ 14 = 65.714 — not a whole number
  • 920 ÷ 15 = 61.333 — not a whole number
  • 920 ÷ 16 = 57.5 — not a whole number
  • 920 ÷ 17 = 54.118 — not a whole number
  • 920 ÷ 18 = 51.111 — not a whole number
  • 920 ÷ 19 = 48.421 — not a whole number
  • 920 ÷ 20 = 46 — so 20 and 46 are factors
  • 920 ÷ 21 = 43.81 — not a whole number
  • 920 ÷ 22 = 41.818 — not a whole number
  • 920 ÷ 23 = 40 — so 23 and 40 are factors
  • 920 ÷ 24 = 38.333 — not a whole number
  • 920 ÷ 25 = 36.8 — not a whole number
  • 920 ÷ 26 = 35.385 — not a whole number
  • 920 ÷ 27 = 34.074 — not a whole number
  • 920 ÷ 28 = 32.857 — not a whole number
  • 920 ÷ 29 = 31.724 — not a whole number
  • 920 ÷ 30 = 30.667 — not a whole number

Collecting both numbers from every successful division gives the complete list: 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460 and 920.

Prime factorization of 920

Divide by the smallest prime that fits, and keep going until the quotient is 1:

920 ÷ 2 = 460
460 ÷ 2 = 230
230 ÷ 2 = 115
115 ÷ 5 = 23
23 ÷ 23 = 1

The primes you divided by give 920 = 2³ × 5 × 23. From the exponents you can also count the factors without listing them: (3 + 1) × (1 + 1) × (1 + 1) = 16.

Properties of 920

  • 920 is a composite number.
  • The sum of all its factors is 2,160; the sum of its proper factors (excluding 920) is 1,240, which makes it a abundant number (its proper factors add up to more than itself).
  • 920 is not a perfect square, so its factors pair up evenly.
  • Multiples of 920 include 1,840, 2,760, 3,680, 4,600 and so on.

Factors vs. multiples

Factors of 920 are the numbers that divide into it; multiples of 920 are the numbers it divides into. Every number has a limited set of factors but infinitely many multiples. To work with any other number, use the factors calculator, or find shared factors with the GCF calculator.

Frequently asked questions

What are the factors of 920?

The factors of 920 are 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460 and 920. Each of these divides 920 with no remainder.

How many factors does 920 have?

920 has 16 positive factors, which form 8 factor pairs. Counting negative factors as well doubles that to 32.

What is the prime factorization of 920?

920 = 2³ × 5 × 23. Its distinct prime factors are 2, 5 and 23.

Is 920 a prime number?

No. 920 is composite because it has 16 factors, more than the two a prime number has.