Factors of 860

860 has 12 factors: 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860. Its prime factorization is 2² × 5 × 43.

Factor pairs of 860

Factor×FactorProduct
1×860860
2×430860
4×215860
5×172860
10×86860
20×43860

Negative pairs work too: (−1) × (−860), (−2) × (−430), … = 860.

Number of factors
12
Factor pairs
6
Sum of factors
1,848
Prime or composite
Composite
Even or odd
Even
Perfect square
No
Prime factorization 2² × 5 × 43

How to find the factors of 860

Test every whole number from 1 up to the square root of 860 (√860 ≈ 29.326). Each number that divides evenly gives you two factors at once: the divisor and the quotient.

  • 860 ÷ 1 = 860 — so 1 and 860 are factors
  • 860 ÷ 2 = 430 — so 2 and 430 are factors
  • 860 ÷ 3 = 286.667 — not a whole number
  • 860 ÷ 4 = 215 — so 4 and 215 are factors
  • 860 ÷ 5 = 172 — so 5 and 172 are factors
  • 860 ÷ 6 = 143.333 — not a whole number
  • 860 ÷ 7 = 122.857 — not a whole number
  • 860 ÷ 8 = 107.5 — not a whole number
  • 860 ÷ 9 = 95.556 — not a whole number
  • 860 ÷ 10 = 86 — so 10 and 86 are factors
  • 860 ÷ 11 = 78.182 — not a whole number
  • 860 ÷ 12 = 71.667 — not a whole number
  • 860 ÷ 13 = 66.154 — not a whole number
  • 860 ÷ 14 = 61.429 — not a whole number
  • 860 ÷ 15 = 57.333 — not a whole number
  • 860 ÷ 16 = 53.75 — not a whole number
  • 860 ÷ 17 = 50.588 — not a whole number
  • 860 ÷ 18 = 47.778 — not a whole number
  • 860 ÷ 19 = 45.263 — not a whole number
  • 860 ÷ 20 = 43 — so 20 and 43 are factors
  • 860 ÷ 21 = 40.952 — not a whole number
  • 860 ÷ 22 = 39.091 — not a whole number
  • 860 ÷ 23 = 37.391 — not a whole number
  • 860 ÷ 24 = 35.833 — not a whole number
  • 860 ÷ 25 = 34.4 — not a whole number
  • 860 ÷ 26 = 33.077 — not a whole number
  • 860 ÷ 27 = 31.852 — not a whole number
  • 860 ÷ 28 = 30.714 — not a whole number
  • 860 ÷ 29 = 29.655 — not a whole number

Collecting both numbers from every successful division gives the complete list: 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860.

Prime factorization of 860

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

860 ÷ 2 = 430
430 ÷ 2 = 215
215 ÷ 5 = 43
43 ÷ 43 = 1

The primes you divided by give 860 = 2² × 5 × 43. From the exponents you can also count the factors without listing them: (2 + 1) × (1 + 1) × (1 + 1) = 12.

Properties of 860

  • 860 is a composite number.
  • The sum of all its factors is 1,848; the sum of its proper factors (excluding 860) is 988, which makes it a abundant number (its proper factors add up to more than itself).
  • 860 is not a perfect square, so its factors pair up evenly.
  • Multiples of 860 include 1,720, 2,580, 3,440, 4,300 and so on.

Factors vs. multiples

Factors of 860 are the numbers that divide into it; multiples of 860 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 860?

The factors of 860 are 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430 and 860. Each of these divides 860 with no remainder.

How many factors does 860 have?

860 has 12 positive factors, which form 6 factor pairs. Counting negative factors as well doubles that to 24.

What is the prime factorization of 860?

860 = 2² × 5 × 43. Its distinct prime factors are 2, 5 and 43.

Is 860 a prime number?

No. 860 is composite because it has 12 factors, more than the two a prime number has.