401064980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{646879}}^1$

素因数の和:646919

約数の個数: 24

約数和(自身を含む): 869406720

約数和(自身を除く): 468341740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 646879, 1293758, 2587516, 3234395, 6468790, 12937580, 20053249, 40106498, 80212996, 100266245, 200532490, 401064980]

約数ペア:

[(1, 401064980), (2, 200532490), (4, 100266245), (5, 80212996), (10, 40106498), (20, 20053249), (31, 12937580), (62, 6468790), (124, 3234395), (155, 2587516), (310, 1293758), (620, 646879)]