18260879

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:399

約数の個数: 24

約数和(自身を含む): 23173920

約数和(自身を除く): 4913041

約数列:

[1, 7, 13, 49, 91, 109, 263, 637, 763, 1417, 1841, 3419, 5341, 9919, 12887, 23933, 28667, 69433, 167531, 200669, 372671, 1404683, 2608697, 18260879]

約数ペア:

[(1, 18260879), (7, 2608697), (13, 1404683), (49, 372671), (91, 200669), (109, 167531), (263, 69433), (637, 28667), (763, 23933), (1417, 12887), (1841, 9919), (3419, 5341)]