19990689

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{739}}^1$

素因数の和:940

約数の個数: 16

約数和(自身を含む): 27279360

約数和(自身を除く): 7288671

約数列:

[1, 3, 71, 127, 213, 381, 739, 2217, 9017, 27051, 52469, 93853, 157407, 281559, 6663563, 19990689]

約数ペア:

[(1, 19990689), (3, 6663563), (71, 281559), (127, 157407), (213, 93853), (381, 52469), (739, 27051), (2217, 9017)]