The factors of 128 are 1, 2, 4, 8, 16, 32, 64 and 128. That is 8 factors in total.
A factor of 128 is a whole number that divides 128 exactly, with no remainder. 128 is a composite number because it has factors other than 1 and itself.
Two numbers that multiply to give 128:
128 = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 2⁷. The prime factors of 128 are 2.
| Number | Factors |
|---|---|
| 124 | 1, 2, 4, 31, 62, 124 |
| 125 | 1, 5, 25, 125 |
| 126 | 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126 |
| 127 | 1, 127 |
| 129 | 1, 3, 43, 129 |
| 130 | 1, 2, 5, 10, 13, 26, 65, 130 |
| 131 | 1, 131 |
| 132 | 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132 |
More about 128: 128 squared · square root of 128 · 128 in binary · 128 in Roman numerals.
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