128427620

素因数分解:

$2^2\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{4861}}^1$

素因数の和:6191

約数の個数: 24

約数和(自身を含む): 269957688

約数和(自身を除く): 141530068

約数列:

[1, 2, 4, 5, 10, 20, 1321, 2642, 4861, 5284, 6605, 9722, 13210, 19444, 24305, 26420, 48610, 97220, 6421381, 12842762, 25685524, 32106905, 64213810, 128427620]

約数ペア:

[(1, 128427620), (2, 64213810), (4, 32106905), (5, 25685524), (10, 12842762), (20, 6421381), (1321, 97220), (2642, 48610), (4861, 26420), (5284, 24305), (6605, 19444), (9722, 13210)]