18631640

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1229}}^1$

素因数の和:1619

約数の個数: 32

約数和(自身を含む): 42066000

約数和(自身を除く): 23434360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1229, 1516, 1895, 2458, 3032, 3790, 4916, 6145, 7580, 9832, 12290, 15160, 24580, 49160, 465791, 931582, 1863164, 2328955, 3726328, 4657910, 9315820, 18631640]

約数ペア:

[(1, 18631640), (2, 9315820), (4, 4657910), (5, 3726328), (8, 2328955), (10, 1863164), (20, 931582), (40, 465791), (379, 49160), (758, 24580), (1229, 15160), (1516, 12290), (1895, 9832), (2458, 7580), (3032, 6145), (3790, 4916)]