388618540

素因数分解:

$2^2\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{11987}}^1$

素因数の和:13617

約数の個数: 24

約数和(自身を含む): 816670512

約数和(自身を除く): 428051972

約数列:

[1, 2, 4, 5, 10, 20, 1621, 3242, 6484, 8105, 11987, 16210, 23974, 32420, 47948, 59935, 119870, 239740, 19430927, 38861854, 77723708, 97154635, 194309270, 388618540]

約数ペア:

[(1, 388618540), (2, 194309270), (4, 97154635), (5, 77723708), (10, 38861854), (20, 19430927), (1621, 239740), (3242, 119870), (6484, 59935), (8105, 47948), (11987, 32420), (16210, 23974)]