81800257

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{3229}}^1$

素因数の和:3301

約数の個数: 24

約数和(自身を含む): 106047360

約数和(自身を除く): 24247103

約数列:

[1, 7, 11, 47, 49, 77, 329, 517, 539, 2303, 3229, 3619, 22603, 25333, 35519, 151763, 158221, 248633, 1062341, 1669393, 1740431, 7436387, 11685751, 81800257]

約数ペア:

[(1, 81800257), (7, 11685751), (11, 7436387), (47, 1740431), (49, 1669393), (77, 1062341), (329, 248633), (517, 158221), (539, 151763), (2303, 35519), (3229, 25333), (3619, 22603)]