28788980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130859}}^1$

素因数の和:130879

約数の個数: 24

約数和(自身を含む): 65953440

約数和(自身を除く): 37164460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 130859, 261718, 523436, 654295, 1308590, 1439449, 2617180, 2878898, 5757796, 7197245, 14394490, 28788980]

約数ペア:

[(1, 28788980), (2, 14394490), (4, 7197245), (5, 5757796), (10, 2878898), (11, 2617180), (20, 1439449), (22, 1308590), (44, 654295), (55, 523436), (110, 261718), (220, 130859)]