12640491

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2549}}^1$

素因数の和:2603

約数の個数: 24

約数和(自身を含む): 19890000

約数和(自身を除く): 7249509

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 2549, 4959, 7647, 22941, 48431, 73921, 145293, 221763, 435879, 665289, 1404499, 4213497, 12640491]

約数ペア:

[(1, 12640491), (3, 4213497), (9, 1404499), (19, 665289), (29, 435879), (57, 221763), (87, 145293), (171, 73921), (261, 48431), (551, 22941), (1653, 7647), (2549, 4959)]