400965820

素因数分解:

$2^2\times 5^1\times {\mathrm{1907}}^1\times {\mathrm{10513}}^1$

素因数の和:12429

約数の個数: 24

約数和(自身を含む): 842549904

約数和(自身を除く): 441584084

約数列:

[1, 2, 4, 5, 10, 20, 1907, 3814, 7628, 9535, 10513, 19070, 21026, 38140, 42052, 52565, 105130, 210260, 20048291, 40096582, 80193164, 100241455, 200482910, 400965820]

約数ペア:

[(1, 400965820), (2, 200482910), (4, 100241455), (5, 80193164), (10, 40096582), (20, 20048291), (1907, 210260), (3814, 105130), (7628, 52565), (9535, 42052), (10513, 38140), (19070, 21026)]