20780039620

素因数分解:

$2^2\times 5^1\times {\mathrm{1049}}^1\times {\mathrm{990469}}^1$

素因数の和:991527

約数の個数: 24

約数和(自身を含む): 43679727000

約数和(自身を除く): 22899687380

約数列:

[1, 2, 4, 5, 10, 20, 1049, 2098, 4196, 5245, 10490, 20980, 990469, 1980938, 3961876, 4952345, 9904690, 19809380, 1039001981, 2078003962, 4156007924, 5195009905, 10390019810, 20780039620]

約数ペア:

[(1, 20780039620), (2, 10390019810), (4, 5195009905), (5, 4156007924), (10, 2078003962), (20, 1039001981), (1049, 19809380), (2098, 9904690), (4196, 4952345), (5245, 3961876), (10490, 1980938), (20980, 990469)]