81187839

素因数分解:

$3^4\times {\mathrm{241}}^1\times {\mathrm{4159}}^1$

素因数の和:4412

約数の個数: 20

約数和(自身を含む): 121813120

約数和(自身を除く): 40625281

約数列:

[1, 3, 9, 27, 81, 241, 723, 2169, 4159, 6507, 12477, 19521, 37431, 112293, 336879, 1002319, 3006957, 9020871, 27062613, 81187839]

約数ペア:

[(1, 81187839), (3, 27062613), (9, 9020871), (27, 3006957), (81, 1002319), (241, 336879), (723, 112293), (2169, 37431), (4159, 19521), (6507, 12477)]