21711639

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1\times {\mathrm{349}}^1$

素因数の和:674

約数の個数: 16

約数和(自身を含む): 29484000

約数和(自身を除く): 7772361

約数列:

[1, 3, 89, 233, 267, 349, 699, 1047, 20737, 31061, 62211, 81317, 93183, 243951, 7237213, 21711639]

約数ペア:

[(1, 21711639), (3, 7237213), (89, 243951), (233, 93183), (267, 81317), (349, 62211), (699, 31061), (1047, 20737)]