209968237921

素因数分解:

${\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{20367469}}^1$

素因数の和:20367556

約数の個数: 12

約数和(自身を含む): 231089314620

約数和(自身を除く): 21121076699

約数列:

[1, 13, 61, 169, 793, 10309, 20367469, 264777097, 1242415609, 3442102261, 16151402917, 209968237921]

約数ペア:

[(1, 209968237921), (13, 16151402917), (61, 3442102261), (169, 1242415609), (793, 264777097), (10309, 20367469)]