20347340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78259}}^1$

素因数の和:78281

約数の個数: 24

約数和(自身を含む): 46016880

約数和(自身を除く): 25669540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78259, 156518, 313036, 391295, 782590, 1017367, 1565180, 2034734, 4069468, 5086835, 10173670, 20347340]

約数ペア:

[(1, 20347340), (2, 10173670), (4, 5086835), (5, 4069468), (10, 2034734), (13, 1565180), (20, 1017367), (26, 782590), (52, 391295), (65, 313036), (130, 156518), (260, 78259)]