20447749

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{6841}}^1$

素因数の和:6916

約数の個数: 12

約数和(自身を含む): 24179628

約数和(自身を除く): 3731879

約数列:

[1, 7, 49, 61, 427, 2989, 6841, 47887, 335209, 417301, 2921107, 20447749]

約数ペア:

[(1, 20447749), (7, 2921107), (49, 417301), (61, 335209), (427, 47887), (2989, 6841)]