Factors of 128
128 has 8 factors.
All factors of 128
1, 2, 4, 8, 16, 32, 64, 128
Prime factorization: 2⁷
Number of factors
8
Sum of factors
255
Prime?
No
Factor pairs of 128
Each pair multiplies together to make 128:
| Pair | Product |
|---|---|
| 1 × 128 | 128 |
| 2 × 64 | 128 |
| 4 × 32 | 128 |
| 8 × 16 | 128 |
Factors of nearby numbers
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Frequently asked questions
What are the factors of 128?+
The factors of 128 are 1, 2, 4, 8, 16, 32, 64, 128 — that is 8 factors in total.
What is the prime factorization of 128?+
The prime factorization of 128 is 2⁷.
Is 128 a prime number?+
No. 128 has 8 factors, more than just 1 and itself, so it is a composite number.