30720501

素因数分解:

$3^2\times 7^2\times {\mathrm{69661}}^1$

素因数の和:69681

約数の個数: 18

約数和(自身を含む): 51619542

約数和(自身を除く): 20899041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 69661, 208983, 487627, 626949, 1462881, 3413389, 4388643, 10240167, 30720501]

約数ペア:

[(1, 30720501), (3, 10240167), (7, 4388643), (9, 3413389), (21, 1462881), (49, 626949), (63, 487627), (147, 208983), (441, 69661)]