21551660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82891}}^1$

素因数の和:82913

約数の個数: 24

約数和(自身を含む): 48740496

約数和(自身を除く): 27188836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82891, 165782, 331564, 414455, 828910, 1077583, 1657820, 2155166, 4310332, 5387915, 10775830, 21551660]

約数ペア:

[(1, 21551660), (2, 10775830), (4, 5387915), (5, 4310332), (10, 2155166), (13, 1657820), (20, 1077583), (26, 828910), (52, 414455), (65, 331564), (130, 165782), (260, 82891)]