81390491

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1051}}^1$

素因数の和:1131

約数の個数: 32

約数和(自身を含む): 107455488

約数和(自身を除く): 26064997

約数列:

[1, 7, 13, 23, 37, 91, 161, 259, 299, 481, 851, 1051, 2093, 3367, 5957, 7357, 11063, 13663, 24173, 38887, 77441, 95641, 169211, 272209, 314249, 505531, 894401, 2199743, 3538717, 6260807, 11627213, 81390491]

約数ペア:

[(1, 81390491), (7, 11627213), (13, 6260807), (23, 3538717), (37, 2199743), (91, 894401), (161, 505531), (259, 314249), (299, 272209), (481, 169211), (851, 95641), (1051, 77441), (2093, 38887), (3367, 24173), (5957, 13663), (7357, 11063)]