2019908020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7768877}}^1$

素因数の和:7768899

約数の個数: 24

約数和(自身を含む): 4568100264

約数和(自身を除く): 2548192244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 7768877, 15537754, 31075508, 38844385, 77688770, 100995401, 155377540, 201990802, 403981604, 504977005, 1009954010, 2019908020]

約数ペア:

[(1, 2019908020), (2, 1009954010), (4, 504977005), (5, 403981604), (10, 201990802), (13, 155377540), (20, 100995401), (26, 77688770), (52, 38844385), (65, 31075508), (130, 15537754), (260, 7768877)]