20 (alƙalami)
20
20 (ashirin) alƙalami ne, tsakanin 19 da 21.
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| Cardinal | ashirin | |||
Factorization (en)  | 22 × 5 | |||
| Greek numeral | Κ´ | |||
| Roman numeral | XX | |||
| Binary | 101002 | |||
| Ternary | 2023 | |||
| Octal (en) | 248 | |||
| Duodecimal (en) | 1812 | |||
| Hexadecimal (en) | 1416 | |||