Compare 21990 vs 21995
| Property | 21990 | 21995 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 4 | 3 |
| Total factors | 4 | 3 |
| Prime factorization | 21 × 31 × 51 × 7331 | 51 × 531 × 831 |
| Prime factorization | 2 × 3 × 5 × 733 | 5 × 53 × 83 |
| Divisors count | 16 | 8 |
| Divisors | 1, 2, 3, 5, 6, 10, 15, 30, 733, 1466, 2199, 3665, 4398, 7330, 10995, 21990 | 1, 5, 53, 83, 265, 415, 4399, 21995 |
| Number of properties | 0 | 0 |
| Roman numberals | ||
| Base 2 | 1010101111001102 | 1010101111010112 |
| Base 3 | 10100111103 | 10100111223 |
| Base 4 | 111132124 | 111132234 |
| Base 5 | 12004305 | 12004405 |
| Base 6 | 2454506 | 2454556 |
| Base 7 | 1210537 | 1210617 |
| Base 8 | 527468 | 527538 |
| Base 9 | 331439 | 331489 |
| Base 10 | 2199010 | 2199510 |
| Base 11 | 1558111 | 1558611 |
| Base 12 | 1088612 | 1088b12 |
| Base 13 | a01713 | a01c13 |
| Base 14 | 802a14 | 803114 |
| Base 15 | 67b015 | 67b515 |
| Base 16 | 55e616 | 55eb16 |