21000895550

素因数分解:

$2^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{2576797}}^1$

素因数の和:2576972

約数の個数: 24

約数和(自身を含む): 39301323096

約数和(自身を除く): 18300427546

約数列:

[1, 2, 5, 10, 25, 50, 163, 326, 815, 1630, 4075, 8150, 2576797, 5153594, 12883985, 25767970, 64419925, 128839850, 420017911, 840035822, 2100089555, 4200179110, 10500447775, 21000895550]

約数ペア:

[(1, 21000895550), (2, 10500447775), (5, 4200179110), (10, 2100089555), (25, 840035822), (50, 420017911), (163, 128839850), (326, 64419925), (815, 25767970), (1630, 12883985), (4075, 5153594), (8150, 2576797)]