12821961

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3541}}^1$

素因数の和:3632

約数の個数: 16

約数和(自身を含む): 18361728

約数和(自身を除く): 5539767

約数列:

[1, 3, 17, 51, 71, 213, 1207, 3541, 3621, 10623, 60197, 180591, 251411, 754233, 4273987, 12821961]

約数ペア:

[(1, 12821961), (3, 4273987), (17, 754233), (51, 251411), (71, 180591), (213, 60197), (1207, 10623), (3541, 3621)]