20939721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{3221}}^1$

素因数の和:3432

約数の個数: 16

約数和(自身を含む): 30621888

約数和(自身を除く): 9682167

約数列:

[1, 3, 11, 33, 197, 591, 2167, 3221, 6501, 9663, 35431, 106293, 634537, 1903611, 6979907, 20939721]

約数ペア:

[(1, 20939721), (3, 6979907), (11, 1903611), (33, 634537), (197, 106293), (591, 35431), (2167, 9663), (3221, 6501)]