720285436

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{1065511}}^1$

素因数の和:1065541

約数の個数: 18

約数和(自身を含む): 1364920872

約数和(自身を除く): 644635436

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 1065511, 2131022, 4262044, 13851643, 27703286, 55406572, 180071359, 360142718, 720285436]

約数ペア:

[(1, 720285436), (2, 360142718), (4, 180071359), (13, 55406572), (26, 27703286), (52, 13851643), (169, 4262044), (338, 2131022), (676, 1065511)]