15991227

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{5903}}^1$

素因数の和:5959

約数の個数: 24

約数和(自身を含む): 27016704

約数和(自身を除く): 11025477

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 5903, 17709, 41321, 53127, 123963, 253829, 371889, 761487, 1776803, 2284461, 5330409, 15991227]

約数ペア:

[(1, 15991227), (3, 5330409), (7, 2284461), (9, 1776803), (21, 761487), (43, 371889), (63, 253829), (129, 123963), (301, 53127), (387, 41321), (903, 17709), (2709, 5903)]