20881839

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{3313}}^1$

素因数の和:3518

約数の個数: 16

約数和(自身を含む): 30541824

約数和(自身を除く): 9659985

約数列:

[1, 3, 11, 33, 191, 573, 2101, 3313, 6303, 9939, 36443, 109329, 632783, 1898349, 6960613, 20881839]

約数ペア:

[(1, 20881839), (3, 6960613), (11, 1898349), (33, 632783), (191, 109329), (573, 36443), (2101, 9939), (3313, 6303)]