Compare 1 vs 20
| Property | 1 | 20 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 0 | 2 |
| Total factors | 0 | 3 |
| Prime factorization | 22 × 51 | |
| Prime factorization | 2 × 2 × 5 | |
| Divisors count | 1 | 6 |
| Divisors | 1 | 1, 2, 4, 5, 10, 20 |
| Number of properties | 0 | 0 |
| Roman numberals | I | XX |
| Base 2 | 12 | 101002 |
| Base 3 | 13 | 2023 |
| Base 4 | 14 | 1104 |
| Base 5 | 15 | 405 |
| Base 6 | 16 | 326 |
| Base 7 | 17 | 267 |
| Base 8 | 18 | 248 |
| Base 9 | 19 | 229 |
| Base 10 | 110 | 2010 |
| Base 11 | 111 | 1911 |
| Base 12 | 112 | 1812 |
| Base 13 | 113 | 1713 |
| Base 14 | 114 | 1614 |
| Base 15 | 115 | 1515 |
| Base 16 | 116 | 1416 |