12642305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{673}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 17381112

約数和(自身を除く): 4738807

約数列:

[1, 5, 13, 17, 65, 85, 221, 289, 673, 1105, 1445, 3365, 3757, 8749, 11441, 18785, 43745, 57205, 148733, 194497, 743665, 972485, 2528461, 12642305]

約数ペア:

[(1, 12642305), (5, 2528461), (13, 972485), (17, 743665), (65, 194497), (85, 148733), (221, 57205), (289, 43745), (673, 18785), (1105, 11441), (1445, 8749), (3365, 3757)]