21246723

素因数分解:

$3^2\times {\mathrm{73}}^2\times {\mathrm{443}}^1$

素因数の和:595

約数の個数: 18

約数和(自身を含む): 31186116

約数和(自身を除く): 9939393

約数列:

[1, 3, 9, 73, 219, 443, 657, 1329, 3987, 5329, 15987, 32339, 47961, 97017, 291051, 2360747, 7082241, 21246723]

約数ペア:

[(1, 21246723), (3, 7082241), (9, 2360747), (73, 291051), (219, 97017), (443, 47961), (657, 32339), (1329, 15987), (3987, 5329)]