81863405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40627}}^1$

素因数の和:40676

約数の個数: 16

約数和(自身を含む): 109208064

約数和(自身を除く): 27344659

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 40627, 203135, 528151, 1259437, 2640755, 6297185, 16372681, 81863405]

約数ペア:

[(1, 81863405), (5, 16372681), (13, 6297185), (31, 2640755), (65, 1259437), (155, 528151), (403, 203135), (2015, 40627)]