19889212

素因数分解:

$2^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{3719}}^1$

素因数の和:3921

約数の個数: 24

約数和(自身を含む): 39997440

約数和(自身を除く): 20108228

約数列:

[1, 2, 4, 7, 14, 28, 191, 382, 764, 1337, 2674, 3719, 5348, 7438, 14876, 26033, 52066, 104132, 710329, 1420658, 2841316, 4972303, 9944606, 19889212]

約数ペア:

[(1, 19889212), (2, 9944606), (4, 4972303), (7, 2841316), (14, 1420658), (28, 710329), (191, 104132), (382, 52066), (764, 26033), (1337, 14876), (2674, 7438), (3719, 5348)]