81642040

素因数分解:

$2^3\times 5^1\times {\mathrm{2041051}}^1$

素因数の和:2041062

約数の個数: 16

約数和(自身を含む): 183694680

約数和(自身を除く): 102052640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2041051, 4082102, 8164204, 10205255, 16328408, 20410510, 40821020, 81642040]

約数ペア:

[(1, 81642040), (2, 40821020), (4, 20410510), (5, 16328408), (8, 10205255), (10, 8164204), (20, 4082102), (40, 2041051)]