21876980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57571}}^1$

素因数の和:57599

約数の個数: 24

約数和(自身を含む): 48360480

約数和(自身を除く): 26483500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57571, 115142, 230284, 287855, 575710, 1093849, 1151420, 2187698, 4375396, 5469245, 10938490, 21876980]

約数ペア:

[(1, 21876980), (2, 10938490), (4, 5469245), (5, 4375396), (10, 2187698), (19, 1151420), (20, 1093849), (38, 575710), (76, 287855), (95, 230284), (190, 115142), (380, 57571)]