21009849

素因数分解:

$3^1\times 7^1\times {\mathrm{769}}^1\times {\mathrm{1301}}^1$

素因数の和:2080

約数の個数: 16

約数和(自身を含む): 32081280

約数和(自身を除く): 11071431

約数列:

[1, 3, 7, 21, 769, 1301, 2307, 3903, 5383, 9107, 16149, 27321, 1000469, 3001407, 7003283, 21009849]

約数ペア:

[(1, 21009849), (3, 7003283), (7, 3001407), (21, 1000469), (769, 27321), (1301, 16149), (2307, 9107), (3903, 5383)]