20321480

素因数分解:

$2^3\times 5^1\times {\mathrm{508037}}^1$

素因数の和:508048

約数の個数: 16

約数和(自身を含む): 45723420

約数和(自身を除く): 25401940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508037, 1016074, 2032148, 2540185, 4064296, 5080370, 10160740, 20321480]

約数ペア:

[(1, 20321480), (2, 10160740), (4, 5080370), (5, 4064296), (8, 2540185), (10, 2032148), (20, 1016074), (40, 508037)]