18678891

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{7351}}^1$

素因数の和:7383

約数の個数: 24

約数和(自身を含む): 31290112

約数和(自身を除く): 12611221

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 7351, 22053, 51457, 80861, 154371, 242583, 566027, 889471, 1698081, 2668413, 6226297, 18678891]

約数ペア:

[(1, 18678891), (3, 6226297), (7, 2668413), (11, 1698081), (21, 889471), (33, 566027), (77, 242583), (121, 154371), (231, 80861), (363, 51457), (847, 22053), (2541, 7351)]