21629279

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:470

約数の個数: 16

約数和(自身を含む): 25259520

約数和(自身を除く): 3630241

約数列:

[1, 7, 103, 131, 229, 721, 917, 1603, 13493, 23587, 29999, 94451, 165109, 209993, 3089897, 21629279]

約数ペア:

[(1, 21629279), (7, 3089897), (103, 209993), (131, 165109), (229, 94451), (721, 29999), (917, 23587), (1603, 13493)]