20421705

素因数分解:

$3^1\times 5^1\times {\mathrm{677}}^1\times {\mathrm{2011}}^1$

素因数の和:2696

約数の個数: 16

約数和(自身を含む): 32739264

約数和(自身を除く): 12317559

約数列:

[1, 3, 5, 15, 677, 2011, 2031, 3385, 6033, 10055, 10155, 30165, 1361447, 4084341, 6807235, 20421705]

約数ペア:

[(1, 20421705), (3, 6807235), (5, 4084341), (15, 1361447), (677, 30165), (2011, 10155), (2031, 10055), (3385, 6033)]