20642780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35591}}^1$

素因数の和:35629

約数の個数: 24

約数和(自身を含む): 44845920

約数和(自身を除く): 24203140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35591, 71182, 142364, 177955, 355910, 711820, 1032139, 2064278, 4128556, 5160695, 10321390, 20642780]

約数ペア:

[(1, 20642780), (2, 10321390), (4, 5160695), (5, 4128556), (10, 2064278), (20, 1032139), (29, 711820), (58, 355910), (116, 177955), (145, 142364), (290, 71182), (580, 35591)]