How to find the factors of 136
Test every whole number from 1 up to the square root of 136 (√136 ≈ 11.662). Each number that divides evenly gives you two factors at once: the divisor and the quotient.
- 136 ÷ 1 = 136 — so 1 and 136 are factors
- 136 ÷ 2 = 68 — so 2 and 68 are factors
- 136 ÷ 3 = 45.333 — not a whole number
- 136 ÷ 4 = 34 — so 4 and 34 are factors
- 136 ÷ 5 = 27.2 — not a whole number
- 136 ÷ 6 = 22.667 — not a whole number
- 136 ÷ 7 = 19.429 — not a whole number
- 136 ÷ 8 = 17 — so 8 and 17 are factors
- 136 ÷ 9 = 15.111 — not a whole number
- 136 ÷ 10 = 13.6 — not a whole number
- 136 ÷ 11 = 12.364 — not a whole number
Collecting both numbers from every successful division gives the complete list: 1, 2, 4, 8, 17, 34, 68 and 136.
Prime factorization of 136
Divide by the smallest prime that fits, and keep going until the quotient is 1:
The primes you divided by give 136 = 2³ × 17. From the exponents you can also count the factors without listing them: (3 + 1) × (1 + 1) = 8.
Properties of 136
- 136 is a composite number.
- The sum of all its factors is 270; the sum of its proper factors (excluding 136) is 134, which makes it a deficient number (its proper factors add up to less than itself).
- 136 is not a perfect square, so its factors pair up evenly.
- Multiples of 136 include 272, 408, 544, 680 and so on.
Factors vs. multiples
Factors of 136 are the numbers that divide into it; multiples of 136 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 136?
The factors of 136 are 1, 2, 4, 8, 17, 34, 68 and 136. Each of these divides 136 with no remainder.
How many factors does 136 have?
136 has 8 positive factors, which form 4 factor pairs. Counting negative factors as well doubles that to 16.
What is the prime factorization of 136?
136 = 2³ × 17. Its distinct prime factors are 2 and 17.
Is 136 a prime number?
No. 136 is composite because it has 8 factors, more than the two a prime number has.