Positive Integers » 20001-30000 » 21901-22000 » 21980
Divisors of the Positive Integer 21980
1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 10990, 21980Sum of all the Divisors of 21980, including itself
53088Sum of the Proper Divisors of 21980
31108Properties of the number 21980
The integer 21980 is an even number.The integer 21980 is a Composite number.
31108 is greater than 21980, so 21980 is an abundant number.
The number 21980 as a Roman Numeral
_X_XMCMLXXX (Roman Numerals with underscores in front have their values increased by 1,000. The underscore represents a line over the numeral, because the Romans used overlines to multiply by 1,000.)The number 21980 in various Numeral Systems
| Base | Representation |
|---|---|
| 2: | 101010111011100 |
| 3: | 1010011002 |
| 4: | 11113130 |
| 5: | 1200410 |
| 6: | 245432 |
| 7: | 121040 |
| 8: | 52734 |
| 9: | 33132 |
| 10: | 21980 |
| 11: | 15572 |
| 12: | 10878 |
| 13: | A00A |
| 14: | 8020 |
| 15: | 67A5 |
| 16: | 55DC |
| 17: | 480G |
| 18: | 3DF2 |
| 19: | 33GG |
| 20: | 2EJ0 |
| 21: | 27HE |
| 22: | 2192 |
| 23: | 1ICF |
| 24: | 1E3K |
| 25: | 1A45 |
| 26: | 16DA |
| 27: | 1342 |
| 28: | 1010 |
| 29: | Q3R |
| 30: | OCK |
| 31: | MR1 |
| 32: | LES |
| 33: | K62 |
| 34: | J0G |
| 35: | HX0 |
| 36: | GYK |