81425279.000000000

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{18457}}^1$

素因数の和:18516

約数の個数: 24

約数和(自身を含む): 324270144

約数和(自身を除く): 130877698

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 5239, 10478, 18457, 36914, 239941, 479882, 572167, 1144334, 3119233, 6238466, 7438171, 14876342, 96696223, 193392446]

約数ペア:

[(1, 193392446), (2, 96696223), (13, 14876342), (26, 7438171), (31, 6238466), (62, 3119233), (169, 1144334), (338, 572167), (403, 479882), (806, 239941), (5239, 36914), (10478, 18457)]