20591067

素因数分解:

$3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1997}}^1$

素因数の和:2498

約数の個数: 16

約数和(自身を含む): 31456512

約数和(自身を除く): 10865445

約数列:

[1, 3, 7, 21, 491, 1473, 1997, 3437, 5991, 10311, 13979, 41937, 980527, 2941581, 6863689, 20591067]

約数ペア:

[(1, 20591067), (3, 6863689), (7, 2941581), (21, 980527), (491, 41937), (1473, 13979), (1997, 10311), (3437, 5991)]