19664827

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{30871}}^1$

素因数の和:30898

約数の個数: 12

約数和(自身を含む): 24635856

約数和(自身を除く): 4971029

約数列:

[1, 7, 13, 49, 91, 637, 30871, 216097, 401323, 1512679, 2809261, 19664827]

約数ペア:

[(1, 19664827), (7, 2809261), (13, 1512679), (49, 401323), (91, 216097), (637, 30871)]