21000455540

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4625651}}^1$

素因数の和:4625887

約数の個数: 24

約数和(自身を含む): 44295243552

約数和(自身を除く): 23294788012

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 4625651, 9251302, 18502604, 23128255, 46256510, 92513020, 1050022777, 2100045554, 4200091108, 5250113885, 10500227770, 21000455540]

約数ペア:

[(1, 21000455540), (2, 10500227770), (4, 5250113885), (5, 4200091108), (10, 2100045554), (20, 1050022777), (227, 92513020), (454, 46256510), (908, 23128255), (1135, 18502604), (2270, 9251302), (4540, 4625651)]