210020121

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{15907}}^1$

素因数の和:16082

約数の個数: 20

約数和(自身を含む): 315678352

約数和(自身を除く): 105658231

約数列:

[1, 3, 9, 27, 81, 163, 489, 1467, 4401, 13203, 15907, 47721, 143163, 429489, 1288467, 2592841, 7778523, 23335569, 70006707, 210020121]

約数ペア:

[(1, 210020121), (3, 70006707), (9, 23335569), (27, 7778523), (81, 2592841), (163, 1288467), (489, 429489), (1467, 143163), (4401, 47721), (13203, 15907)]