81606040

素因数分解:

$2^3\times 5^1\times {\mathrm{2040151}}^1$

素因数の和:2040162

約数の個数: 16

約数和(自身を含む): 183613680

約数和(自身を除く): 102007640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2040151, 4080302, 8160604, 10200755, 16321208, 20401510, 40803020, 81606040]

約数ペア:

[(1, 81606040), (2, 40803020), (4, 20401510), (5, 16321208), (8, 10200755), (10, 8160604), (20, 4080302), (40, 2040151)]