How to find the factors of 156
Test every whole number from 1 up to the square root of 156 (√156 ≈ 12.490). Each number that divides evenly gives you two factors at once: the divisor and the quotient.
- 156 ÷ 1 = 156 — so 1 and 156 are factors
- 156 ÷ 2 = 78 — so 2 and 78 are factors
- 156 ÷ 3 = 52 — so 3 and 52 are factors
- 156 ÷ 4 = 39 — so 4 and 39 are factors
- 156 ÷ 5 = 31.2 — not a whole number
- 156 ÷ 6 = 26 — so 6 and 26 are factors
- 156 ÷ 7 = 22.286 — not a whole number
- 156 ÷ 8 = 19.5 — not a whole number
- 156 ÷ 9 = 17.333 — not a whole number
- 156 ÷ 10 = 15.6 — not a whole number
- 156 ÷ 11 = 14.182 — not a whole number
- 156 ÷ 12 = 13 — so 12 and 13 are factors
Collecting both numbers from every successful division gives the complete list: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78 and 156.
Prime factorization of 156
Divide by the smallest prime that fits, and keep going until the quotient is 1:
The primes you divided by give 156 = 2² × 3 × 13. From the exponents you can also count the factors without listing them: (2 + 1) × (1 + 1) × (1 + 1) = 12.
Properties of 156
- 156 is a composite number.
- The sum of all its factors is 392; the sum of its proper factors (excluding 156) is 236, which makes it a abundant number (its proper factors add up to more than itself).
- 156 is not a perfect square, so its factors pair up evenly.
- Multiples of 156 include 312, 468, 624, 780 and so on.
Factors vs. multiples
Factors of 156 are the numbers that divide into it; multiples of 156 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 156?
The factors of 156 are 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78 and 156. Each of these divides 156 with no remainder.
How many factors does 156 have?
156 has 12 positive factors, which form 6 factor pairs. Counting negative factors as well doubles that to 24.
What is the prime factorization of 156?
156 = 2² × 3 × 13. Its distinct prime factors are 2, 3 and 13.
Is 156 a prime number?
No. 156 is composite because it has 12 factors, more than the two a prime number has.