1991238080

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3769}}^1$

素因数の和:3926

約数の個数: 112

約数和(自身を含む): 5147950080

約数和(自身を除く): 3156712000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 127, 130, 160, 208, 254, 260, 320, 416, 508, 520, 635, 832, 1016, 1040, 1270, 1651, 2032, 2080, 2540, 3302, 3769, 4064, 4160, 5080, 6604, 7538, 8128, 8255, 10160, 13208, 15076, 16510, 18845, 20320, 26416, 30152, 33020, 37690, 40640, 48997, 52832, 60304, 66040, 75380, 97994, 105664, 120608, 132080, 150760, 195988, 241216, 244985, 264160, 301520, 391976, 478663, 489970, 528320, 603040, 783952, 957326, 979940, 1206080, 1567904, 1914652, 1959880, 2393315, 3135808, 3829304, 3919760, 4786630, 6222619, 7658608, 7839520, 9573260, 12445238, 15317216, 15679040, 19146520, 24890476, 30634432, 31113095, 38293040, 49780952, 62226190, 76586080, 99561904, 124452380, 153172160, 199123808, 248904760, 398247616, 497809520, 995619040, 1991238080]

約数ペア:

[(1, 1991238080), (2, 995619040), (4, 497809520), (5, 398247616), (8, 248904760), (10, 199123808), (13, 153172160), (16, 124452380), (20, 99561904), (26, 76586080), (32, 62226190), (40, 49780952), (52, 38293040), (64, 31113095), (65, 30634432), (80, 24890476), (104, 19146520), (127, 15679040), (130, 15317216), (160, 12445238), (208, 9573260), (254, 7839520), (260, 7658608), (320, 6222619), (416, 4786630), (508, 3919760), (520, 3829304), (635, 3135808), (832, 2393315), (1016, 1959880), (1040, 1914652), (1270, 1567904), (1651, 1206080), (2032, 979940), (2080, 957326), (2540, 783952), (3302, 603040), (3769, 528320), (4064, 489970), (4160, 478663), (5080, 391976), (6604, 301520), (7538, 264160), (8128, 244985), (8255, 241216), (10160, 195988), (13208, 150760), (15076, 132080), (16510, 120608), (18845, 105664), (20320, 97994), (26416, 75380), (30152, 66040), (33020, 60304), (37690, 52832), (40640, 48997)]