390056980

素因数分解:

$2^2\times 5^1\times {\mathrm{1627}}^1\times {\mathrm{11987}}^1$

素因数の和:13623

約数の個数: 24

約数和(自身を含む): 819691488

約数和(自身を除く): 429634508

約数列:

[1, 2, 4, 5, 10, 20, 1627, 3254, 6508, 8135, 11987, 16270, 23974, 32540, 47948, 59935, 119870, 239740, 19502849, 39005698, 78011396, 97514245, 195028490, 390056980]

約数ペア:

[(1, 390056980), (2, 195028490), (4, 97514245), (5, 78011396), (10, 39005698), (20, 19502849), (1627, 239740), (3254, 119870), (6508, 59935), (8135, 47948), (11987, 32540), (16270, 23974)]