21321951

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17209}}^1$

素因数の和:17278

約数の個数: 16

約数和(自身を含む): 33043200

約数和(自身を除く): 11721249

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17209, 51627, 120463, 361389, 1015331, 3045993, 7107317, 21321951]

約数ペア:

[(1, 21321951), (3, 7107317), (7, 3045993), (21, 1015331), (59, 361389), (177, 120463), (413, 51627), (1239, 17209)]