20128851

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{20149}}^1$

素因数の和:20195

約数の個数: 16

約数和(自身を含む): 30628000

約数和(自身を除く): 10499149

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 20149, 60447, 181341, 544023, 745513, 2236539, 6709617, 20128851]

約数ペア:

[(1, 20128851), (3, 6709617), (9, 2236539), (27, 745513), (37, 544023), (111, 181341), (333, 60447), (999, 20149)]