21098260

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9859}}^1$

素因数の和:9975

約数の個数: 24

約数和(自身を含む): 44724960

約数和(自身を除く): 23626700

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9859, 19718, 39436, 49295, 98590, 197180, 1054913, 2109826, 4219652, 5274565, 10549130, 21098260]

約数ペア:

[(1, 21098260), (2, 10549130), (4, 5274565), (5, 4219652), (10, 2109826), (20, 1054913), (107, 197180), (214, 98590), (428, 49295), (535, 39436), (1070, 19718), (2140, 9859)]