21068680

素因数分解:

$2^3\times 5^1\times {\mathrm{526717}}^1$

素因数の和:526728

約数の個数: 16

約数和(自身を含む): 47404620

約数和(自身を除く): 26335940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526717, 1053434, 2106868, 2633585, 4213736, 5267170, 10534340, 21068680]

約数ペア:

[(1, 21068680), (2, 10534340), (4, 5267170), (5, 4213736), (8, 2633585), (10, 2106868), (20, 1053434), (40, 526717)]