640512145

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{4871}}^1$

素因数の和:4930

約数の個数: 48

約数和(自身を含む): 1005113088

約数和(自身を除く): 364600943

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 289, 455, 595, 1105, 1445, 1547, 2023, 3757, 4871, 7735, 10115, 18785, 24355, 26299, 34097, 63323, 82807, 131495, 170485, 316615, 414035, 443261, 579649, 1076491, 1407719, 2216305, 2898245, 5382455, 7038595, 7535437, 9854033, 18300347, 37677185, 49270165, 91501735, 128102429, 640512145]

約数ペア:

[(1, 640512145), (5, 128102429), (7, 91501735), (13, 49270165), (17, 37677185), (35, 18300347), (65, 9854033), (85, 7535437), (91, 7038595), (119, 5382455), (221, 2898245), (289, 2216305), (455, 1407719), (595, 1076491), (1105, 579649), (1445, 443261), (1547, 414035), (2023, 316615), (3757, 170485), (4871, 131495), (7735, 82807), (10115, 63323), (18785, 34097), (24355, 26299)]