28308020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108877}}^1$

素因数の和:108899

約数の個数: 24

約数和(自身を含む): 64020264

約数和(自身を除く): 35712244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108877, 217754, 435508, 544385, 1088770, 1415401, 2177540, 2830802, 5661604, 7077005, 14154010, 28308020]

約数ペア:

[(1, 28308020), (2, 14154010), (4, 7077005), (5, 5661604), (10, 2830802), (13, 2177540), (20, 1415401), (26, 1088770), (52, 544385), (65, 435508), (130, 217754), (260, 108877)]