401211920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{161779}}^1$

素因数の和:161823

約数の個数: 40

約数和(自身を含む): 962914560

約数和(自身を除く): 561702640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 161779, 323558, 647116, 808895, 1294232, 1617790, 2588464, 3235580, 5015149, 6471160, 10030298, 12942320, 20060596, 25075745, 40121192, 50151490, 80242384, 100302980, 200605960, 401211920]

約数ペア:

[(1, 401211920), (2, 200605960), (4, 100302980), (5, 80242384), (8, 50151490), (10, 40121192), (16, 25075745), (20, 20060596), (31, 12942320), (40, 10030298), (62, 6471160), (80, 5015149), (124, 3235580), (155, 2588464), (248, 1617790), (310, 1294232), (496, 808895), (620, 647116), (1240, 323558), (2480, 161779)]