20417380

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6263}}^1$

素因数の和:6435

約数の個数: 24

約数和(自身を含む): 43146432

約数和(自身を除く): 22729052

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6263, 12526, 25052, 31315, 62630, 125260, 1020869, 2041738, 4083476, 5104345, 10208690, 20417380]

約数ペア:

[(1, 20417380), (2, 10208690), (4, 5104345), (5, 4083476), (10, 2041738), (20, 1020869), (163, 125260), (326, 62630), (652, 31315), (815, 25052), (1630, 12526), (3260, 6263)]