The factors of 161 are 1, 7, 23 and 161. That is 4 factors in total.
A factor of 161 is a whole number that divides 161 exactly, with no remainder. 161 is a composite number because it has factors other than 1 and itself.
Two numbers that multiply to give 161:
161 = 7 × 23. The prime factors of 161 are 7 and 23.
| Number | Factors |
|---|---|
| 157 | 1, 157 |
| 158 | 1, 2, 79, 158 |
| 159 | 1, 3, 53, 159 |
| 160 | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160 |
| 162 | 1, 2, 3, 6, 9, 18, 27, 54, 81, 162 |
| 163 | 1, 163 |
| 164 | 1, 2, 4, 41, 82, 164 |
| 165 | 1, 3, 5, 11, 15, 33, 55, 165 |
More about 161: square root of 161 · 161 in binary.
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