12639501

素因数分解:

$3^2\times 7^2\times {\mathrm{28661}}^1$

素因数の和:28681

約数の個数: 18

約数和(自身を含む): 21238542

約数和(自身を除く): 8599041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 28661, 85983, 200627, 257949, 601881, 1404389, 1805643, 4213167, 12639501]

約数ペア:

[(1, 12639501), (3, 4213167), (7, 1805643), (9, 1404389), (21, 601881), (49, 257949), (63, 200627), (147, 85983), (441, 28661)]