18872161

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{1789}}^1$

素因数の和:1944

約数の個数: 16

約数和(自身を含む): 23713920

約数和(自身を除く): 4841759

約数列:

[1, 7, 11, 77, 137, 959, 1507, 1789, 10549, 12523, 19679, 137753, 245093, 1715651, 2696023, 18872161]

約数ペア:

[(1, 18872161), (7, 2696023), (11, 1715651), (77, 245093), (137, 137753), (959, 19679), (1507, 12523), (1789, 10549)]