Compare 21981 vs 21984
| Property | 21981 | 21984 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 7 |
| Prime factorization | 31 × 171 × 4311 | 25 × 31 × 2291 |
| Prime factorization | 3 × 17 × 431 | 2 × 2 × 2 × 2 × 2 × 3 × 229 |
| Divisors count | 8 | 24 |
| Divisors | 1, 3, 17, 51, 431, 1293, 7327, 21981 | 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 229, 458, 687, 916, 1374, 1832, 2748, 3664, 5496, 7328, 10992, 21984 |
| Number of properties | 0 | 0 |
| Roman numberals | ||
| Base 2 | 1010101110111012 | 1010101111000002 |
| Base 3 | 10100110103 | 10100110203 |
| Base 4 | 111131314 | 111132004 |
| Base 5 | 12004115 | 12004145 |
| Base 6 | 2454336 | 2454406 |
| Base 7 | 1210417 | 1210447 |
| Base 8 | 527358 | 527408 |
| Base 9 | 331339 | 331369 |
| Base 10 | 2198110 | 2198410 |
| Base 11 | 1557311 | 1557611 |
| Base 12 | 1087912 | 1088012 |
| Base 13 | a00b13 | a01113 |
| Base 14 | 802114 | 802414 |
| Base 15 | 67a615 | 67a915 |
| Base 16 | 55dd16 | 55e016 |