20990354

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12391}}^1$

素因数の和:12422

約数の個数: 24

約数和(自身を含む): 39555264

約数和(自身を除く): 18564910

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12391, 24782, 86737, 136301, 173474, 272602, 954107, 1499311, 1908214, 2998622, 10495177, 20990354]

約数ペア:

[(1, 20990354), (2, 10495177), (7, 2998622), (11, 1908214), (14, 1499311), (22, 954107), (77, 272602), (121, 173474), (154, 136301), (242, 86737), (847, 24782), (1694, 12391)]