390051920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157279}}^1$

素因数の和:157323

約数の個数: 40

約数和(自身を含む): 936130560

約数和(自身を除く): 546078640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 157279, 314558, 629116, 786395, 1258232, 1572790, 2516464, 3145580, 4875649, 6291160, 9751298, 12582320, 19502596, 24378245, 39005192, 48756490, 78010384, 97512980, 195025960, 390051920]

約数ペア:

[(1, 390051920), (2, 195025960), (4, 97512980), (5, 78010384), (8, 48756490), (10, 39005192), (16, 24378245), (20, 19502596), (31, 12582320), (40, 9751298), (62, 6291160), (80, 4875649), (124, 3145580), (155, 2516464), (248, 1572790), (310, 1258232), (496, 786395), (620, 629116), (1240, 314558), (2480, 157279)]