15387421

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 18759840

約数和(自身を除く): 3372419

約数列:

[1, 7, 43, 49, 67, 109, 301, 469, 763, 2107, 2881, 3283, 4687, 5341, 7303, 20167, 32809, 51121, 141169, 229663, 314029, 357847, 2198203, 15387421]

約数ペア:

[(1, 15387421), (7, 2198203), (43, 357847), (49, 314029), (67, 229663), (109, 141169), (301, 51121), (469, 32809), (763, 20167), (2107, 7303), (2881, 5341), (3283, 4687)]