19916481

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 29051616

約数和(自身を除く): 9135135

約数列:

[1, 3, 13, 39, 163, 169, 241, 489, 507, 723, 2119, 3133, 6357, 9399, 27547, 39283, 40729, 82641, 117849, 122187, 510679, 1532037, 6638827, 19916481]

約数ペア:

[(1, 19916481), (3, 6638827), (13, 1532037), (39, 510679), (163, 122187), (169, 117849), (241, 82641), (489, 40729), (507, 39283), (723, 27547), (2119, 9399), (3133, 6357)]