18428020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{70877}}^1$

素因数の和:70899

約数の個数: 24

約数和(自身を含む): 41676264

約数和(自身を除く): 23248244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 70877, 141754, 283508, 354385, 708770, 921401, 1417540, 1842802, 3685604, 4607005, 9214010, 18428020]

約数ペア:

[(1, 18428020), (2, 9214010), (4, 4607005), (5, 3685604), (10, 1842802), (13, 1417540), (20, 921401), (26, 708770), (52, 354385), (65, 283508), (130, 141754), (260, 70877)]