20578491

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1117}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 31393440

約数和(自身を除く): 10814949

約数列:

[1, 3, 9, 23, 69, 89, 207, 267, 801, 1117, 2047, 3351, 6141, 10053, 18423, 25691, 77073, 99413, 231219, 298239, 894717, 2286499, 6859497, 20578491]

約数ペア:

[(1, 20578491), (3, 6859497), (9, 2286499), (23, 894717), (69, 298239), (89, 231219), (207, 99413), (267, 77073), (801, 25691), (1117, 18423), (2047, 10053), (3351, 6141)]