20711781

素因数分解:

$3^4\times {\mathrm{241}}^1\times {\mathrm{1061}}^1$

素因数の和:1314

約数の個数: 20

約数和(自身を含む): 31097484

約数和(自身を除く): 10385703

約数列:

[1, 3, 9, 27, 81, 241, 723, 1061, 2169, 3183, 6507, 9549, 19521, 28647, 85941, 255701, 767103, 2301309, 6903927, 20711781]

約数ペア:

[(1, 20711781), (3, 6903927), (9, 2301309), (27, 767103), (81, 255701), (241, 85941), (723, 28647), (1061, 19521), (2169, 9549), (3183, 6507)]