261863121

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{394967}}^1$

素因数の和:395000

約数の個数: 16

約数和(自身を含む): 398127744

約数和(自身を除く): 136264623

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 394967, 1184901, 5134571, 6714439, 15403713, 20143317, 87287707, 261863121]

約数ペア:

[(1, 261863121), (3, 87287707), (13, 20143317), (17, 15403713), (39, 6714439), (51, 5134571), (221, 1184901), (663, 394967)]