21668213

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{733}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 25648896

約数和(自身を除く): 3980683

約数列:

[1, 7, 41, 103, 287, 721, 733, 4223, 5131, 29561, 30053, 75499, 210371, 528493, 3095459, 21668213]

約数ペア:

[(1, 21668213), (7, 3095459), (41, 528493), (103, 210371), (287, 75499), (721, 30053), (733, 29561), (4223, 5131)]