20118020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77377}}^1$

素因数の和:77399

約数の個数: 24

約数和(自身を含む): 45498264

約数和(自身を除く): 25380244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77377, 154754, 309508, 386885, 773770, 1005901, 1547540, 2011802, 4023604, 5029505, 10059010, 20118020]

約数ペア:

[(1, 20118020), (2, 10059010), (4, 5029505), (5, 4023604), (10, 2011802), (13, 1547540), (20, 1005901), (26, 773770), (52, 386885), (65, 309508), (130, 154754), (260, 77377)]