21098012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{405731}}^1$

素因数の和:405748

約数の個数: 12

約数和(自身を含む): 39761736

約数和(自身を除く): 18663724

約数列:

[1, 2, 4, 13, 26, 52, 405731, 811462, 1622924, 5274503, 10549006, 21098012]

約数ペア:

[(1, 21098012), (2, 10549006), (4, 5274503), (13, 1622924), (26, 811462), (52, 405731)]