20571741

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{379}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 30786080

約数和(自身を除く): 10214339

約数列:

[1, 3, 9, 37, 111, 163, 333, 379, 489, 1137, 1467, 3411, 6031, 14023, 18093, 42069, 54279, 61777, 126207, 185331, 555993, 2285749, 6857247, 20571741]

約数ペア:

[(1, 20571741), (3, 6857247), (9, 2285749), (37, 555993), (111, 185331), (163, 126207), (333, 61777), (379, 54279), (489, 42069), (1137, 18093), (1467, 14023), (3411, 6031)]