Factors of 155
155 has 4 factors.
All factors of 155
1, 5, 31, 155
Prime factorization: 5 × 31
Number of factors
4
Sum of factors
192
Prime?
No
Factor pairs of 155
Each pair multiplies together to make 155:
| Pair | Product |
|---|---|
| 1 × 155 | 155 |
| 5 × 31 | 155 |
Factors of nearby numbers
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Frequently asked questions
What are the factors of 155?+
The factors of 155 are 1, 5, 31, 155 — that is 4 factors in total.
What is the prime factorization of 155?+
The prime factorization of 155 is 5 × 31.
Is 155 a prime number?+
No. 155 has 4 factors, more than just 1 and itself, so it is a composite number.