21000620180

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3903461}}^1$

素因数の和:3903739

約数の個数: 24

約数和(自身を含む): 44265259080

約数和(自身を除く): 23264638900

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5380, 3903461, 7806922, 15613844, 19517305, 39034610, 78069220, 1050031009, 2100062018, 4200124036, 5250155045, 10500310090, 21000620180]

約数ペア:

[(1, 21000620180), (2, 10500310090), (4, 5250155045), (5, 4200124036), (10, 2100062018), (20, 1050031009), (269, 78069220), (538, 39034610), (1076, 19517305), (1345, 15613844), (2690, 7806922), (5380, 3903461)]