Compare 18 vs 28
Property | 18 | 28 |
---|---|---|
Type | composite number | composite number |
Unique factors | 2 | 2 |
Total factors | 3 | 3 |
Prime factorization | 21 × 32 | 22 × 71 |
Prime factorization | 2 × 3 × 3 | 2 × 2 × 7 |
Divisors count | 6 | 6 |
Divisors | 1, 2, 3, 6, 9, 18 | 1, 2, 4, 7, 14, 28 |
Number of properties | 0 | 0 |
Roman numberals | XVIII | XXVIII |
Base 2 | 100102 | 111002 |
Base 3 | 2003 | 10013 |
Base 4 | 1024 | 1304 |
Base 5 | 335 | 1035 |
Base 6 | 306 | 446 |
Base 7 | 247 | 407 |
Base 8 | 228 | 348 |
Base 9 | 209 | 319 |
Base 10 | 1810 | 2810 |
Base 11 | 1711 | 2611 |
Base 12 | 1612 | 2412 |
Base 13 | 1513 | 2213 |
Base 14 | 1414 | 2014 |
Base 15 | 1315 | 1d15 |
Base 16 | 1216 | 1c16 |