408977960

素因数分解:

$2^3\times 5^1\times {\mathrm{887}}^1\times {\mathrm{11527}}^1$

素因数の和:12425

約数の個数: 32

約数和(自身を含む): 921317760

約数和(自身を除く): 512339800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 887, 1774, 3548, 4435, 7096, 8870, 11527, 17740, 23054, 35480, 46108, 57635, 92216, 115270, 230540, 461080, 10224449, 20448898, 40897796, 51122245, 81795592, 102244490, 204488980, 408977960]

約数ペア:

[(1, 408977960), (2, 204488980), (4, 102244490), (5, 81795592), (8, 51122245), (10, 40897796), (20, 20448898), (40, 10224449), (887, 461080), (1774, 230540), (3548, 115270), (4435, 92216), (7096, 57635), (8870, 46108), (11527, 35480), (17740, 23054)]