Compare 21018 vs 21021
| Property | 21018 | 21021 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 4 | 4 |
| Total factors | 4 | 5 |
| Prime factorization | 21 × 31 × 311 × 1131 | 31 × 72 × 111 × 131 |
| Prime factorization | 2 × 3 × 31 × 113 | 3 × 7 × 7 × 11 × 13 |
| Divisors count | 16 | 24 |
| Divisors | 1, 2, 3, 6, 31, 62, 93, 113, 186, 226, 339, 678, 3503, 7006, 10509, 21018 | 1, 3, 7, 11, 13, 21, 33, 39, 49, 77, 91, 143, 147, 231, 273, 429, 539, 637, 1001, 1617, 1911, 3003, 7007, 21021 |
| Number of properties | 0 | 0 |
| Roman numberals | ||
| Base 2 | 1010010000110102 | 1010010000111012 |
| Base 3 | 10012111103 | 10012111203 |
| Base 4 | 110201224 | 110201314 |
| Base 5 | 11330335 | 11330415 |
| Base 6 | 2411506 | 2411536 |
| Base 7 | 1151647 | 1152007 |
| Base 8 | 510328 | 510358 |
| Base 9 | 317439 | 317469 |
| Base 10 | 2101810 | 2102110 |
| Base 11 | 1487811 | 1488011 |
| Base 12 | 101b612 | 101b912 |
| Base 13 | 974a13 | 975013 |
| Base 14 | 793414 | 793714 |
| Base 15 | 636315 | 636615 |
| Base 16 | 521a16 | 521d16 |