81379978

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1\times {\mathrm{2791}}^1$

素因数の和:3093

約数の個数: 16

約数和(自身を含む): 124634880

約数和(自身を除く): 43254902

約数列:

[1, 2, 61, 122, 239, 478, 2791, 5582, 14579, 29158, 170251, 340502, 667049, 1334098, 40689989, 81379978]

約数ペア:

[(1, 81379978), (2, 40689989), (61, 1334098), (122, 667049), (239, 340502), (478, 170251), (2791, 29158), (5582, 14579)]