81501040

素因数分解:

$2^4\times 5^1\times {\mathrm{1018763}}^1$

素因数の和:1018776

約数の個数: 20

約数和(自身を含む): 189490104

約数和(自身を除く): 107989064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1018763, 2037526, 4075052, 5093815, 8150104, 10187630, 16300208, 20375260, 40750520, 81501040]

約数ペア:

[(1, 81501040), (2, 40750520), (4, 20375260), (5, 16300208), (8, 10187630), (10, 8150104), (16, 5093815), (20, 4075052), (40, 2037526), (80, 1018763)]