21925180

素因数分解:

$2^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1129}}^1$

素因数の和:2109

約数の個数: 24

約数和(自身を含む): 46131120

約数和(自身を除く): 24205940

約数列:

[1, 2, 4, 5, 10, 20, 971, 1129, 1942, 2258, 3884, 4516, 4855, 5645, 9710, 11290, 19420, 22580, 1096259, 2192518, 4385036, 5481295, 10962590, 21925180]

約数ペア:

[(1, 21925180), (2, 10962590), (4, 5481295), (5, 4385036), (10, 2192518), (20, 1096259), (971, 22580), (1129, 19420), (1942, 11290), (2258, 9710), (3884, 5645), (4516, 4855)]