21331121

素因数分解:

$7^2\times {\mathrm{229}}^1\times {\mathrm{1901}}^1$

素因数の和:2144

約数の個数: 12

約数和(自身を含む): 24935220

約数和(自身を除く): 3604099

約数列:

[1, 7, 49, 229, 1603, 1901, 11221, 13307, 93149, 435329, 3047303, 21331121]

約数ペア:

[(1, 21331121), (7, 3047303), (49, 435329), (229, 93149), (1603, 13307), (1901, 11221)]