81721145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{941}}^1\times {\mathrm{1579}}^1$

素因数の和:2536

約数の個数: 16

約数和(自身を含む): 107161920

約数和(自身を除く): 25440775

約数列:

[1, 5, 11, 55, 941, 1579, 4705, 7895, 10351, 17369, 51755, 86845, 1485839, 7429195, 16344229, 81721145]

約数ペア:

[(1, 81721145), (5, 16344229), (11, 7429195), (55, 1485839), (941, 86845), (1579, 51755), (4705, 17369), (7895, 10351)]