2168980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9859}}^1$

素因数の和:9879

約数の個数: 24

約数和(自身を含む): 4969440

約数和(自身を除く): 2800460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9859, 19718, 39436, 49295, 98590, 108449, 197180, 216898, 433796, 542245, 1084490, 2168980]

約数ペア:

[(1, 2168980), (2, 1084490), (4, 542245), (5, 433796), (10, 216898), (11, 197180), (20, 108449), (22, 98590), (44, 49295), (55, 39436), (110, 19718), (220, 9859)]