20115771

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1231}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 28976640

約数和(自身を除く): 8860869

約数列:

[1, 3, 13, 39, 419, 1231, 1257, 3693, 5447, 16003, 16341, 48009, 515789, 1547367, 6705257, 20115771]

約数ペア:

[(1, 20115771), (3, 6705257), (13, 1547367), (39, 515789), (419, 48009), (1231, 16341), (1257, 16003), (3693, 5447)]