209492043

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 299846400

約数和(自身を除く): 90354357

約数列:

[1, 3, 19, 57, 137, 139, 193, 411, 417, 579, 2603, 2641, 3667, 7809, 7923, 11001, 19043, 26441, 26827, 57129, 79323, 80481, 361817, 502379, 509713, 1085451, 1507137, 1529139, 3675299, 11025897, 69830681, 209492043]

約数ペア:

[(1, 209492043), (3, 69830681), (19, 11025897), (57, 3675299), (137, 1529139), (139, 1507137), (193, 1085451), (411, 509713), (417, 502379), (579, 361817), (2603, 80481), (2641, 79323), (3667, 57129), (7809, 26827), (7923, 26441), (11001, 19043)]