212040009

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{7717}}^1$

素因数の和:7837

約数の個数: 24

約数和(自身を含む): 317858112

約数和(自身を除く): 105818103

約数列:

[1, 3, 9, 43, 71, 129, 213, 387, 639, 3053, 7717, 9159, 23151, 27477, 69453, 331831, 547907, 995493, 1643721, 2986479, 4931163, 23560001, 70680003, 212040009]

約数ペア:

[(1, 212040009), (3, 70680003), (9, 23560001), (43, 4931163), (71, 2986479), (129, 1643721), (213, 995493), (387, 547907), (639, 331831), (3053, 69453), (7717, 27477), (9159, 23151)]