81440624

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{118373}}^1$

素因数の和:118424

約数の個数: 20

約数和(自身を含む): 161462136

約数和(自身を除く): 80021512

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 118373, 236746, 473492, 946984, 1893968, 5090039, 10180078, 20360156, 40720312, 81440624]

約数ペア:

[(1, 81440624), (2, 40720312), (4, 20360156), (8, 10180078), (16, 5090039), (43, 1893968), (86, 946984), (172, 473492), (344, 236746), (688, 118373)]