20500575

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{4481}}^1$

素因数の和:4555

約数の個数: 24

約数和(自身を含む): 34457616

約数和(自身を除く): 13957041

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4481, 4575, 13443, 22405, 67215, 112025, 273341, 336075, 820023, 1366705, 4100115, 6833525, 20500575]

約数ペア:

[(1, 20500575), (3, 6833525), (5, 4100115), (15, 1366705), (25, 820023), (61, 336075), (75, 273341), (183, 112025), (305, 67215), (915, 22405), (1525, 13443), (4481, 4575)]