20517244

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42391}}^1$

素因数の和:42417

約数の個数: 18

約数和(自身を含む): 39466952

約数和(自身を除く): 18949708

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42391, 84782, 169564, 466301, 932602, 1865204, 5129311, 10258622, 20517244]

約数ペア:

[(1, 20517244), (2, 10258622), (4, 5129311), (11, 1865204), (22, 932602), (44, 466301), (121, 169564), (242, 84782), (484, 42391)]