256551680

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:195

約数の個数: 288

約数和(自身を含む): 812367360

約数和(自身を除く): 555815680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 19, 20, 22, 28, 32, 35, 38, 40, 44, 55, 56, 64, 70, 76, 77, 80, 88, 95, 110, 112, 128, 133, 137, 140, 152, 154, 160, 176, 190, 209, 220, 224, 256, 266, 274, 280, 304, 308, 320, 352, 380, 385, 418, 440, 448, 532, 548, 560, 608, 616, 640, 665, 685, 704, 760, 770, 836, 880, 896, 959, 1045, 1064, 1096, 1120, 1216, 1232, 1280, 1330, 1370, 1408, 1463, 1507, 1520, 1540, 1672, 1760, 1792, 1918, 2090, 2128, 2192, 2240, 2432, 2464, 2603, 2660, 2740, 2816, 2926, 3014, 3040, 3080, 3344, 3520, 3836, 4180, 4256, 4384, 4480, 4795, 4864, 4928, 5206, 5320, 5480, 5852, 6028, 6080, 6160, 6688, 7040, 7315, 7535, 7672, 8360, 8512, 8768, 8960, 9590, 9856, 10412, 10549, 10640, 10960, 11704, 12056, 12160, 12320, 13015, 13376, 14080, 14630, 15070, 15344, 16720, 17024, 17536, 18221, 19180, 19712, 20824, 21098, 21280, 21920, 23408, 24112, 24320, 24640, 26030, 26752, 28633, 29260, 30140, 30688, 33440, 34048, 35072, 36442, 38360, 41648, 42196, 42560, 43840, 46816, 48224, 49280, 52060, 52745, 53504, 57266, 58520, 60280, 61376, 66880, 72884, 76720, 83296, 84392, 85120, 87680, 91105, 93632, 96448, 98560, 104120, 105490, 114532, 117040, 120560, 122752, 133760, 143165, 145768, 153440, 166592, 168784, 170240, 175360, 182210, 187264, 192896, 200431, 208240, 210980, 229064, 234080, 241120, 245504, 267520, 286330, 291536, 306880, 333184, 337568, 364420, 374528, 385792, 400862, 416480, 421960, 458128, 468160, 482240, 572660, 583072, 613760, 666368, 675136, 728840, 801724, 832960, 843920, 916256, 936320, 964480, 1002155, 1145320, 1166144, 1227520, 1350272, 1457680, 1603448, 1665920, 1687840, 1832512, 1872640, 1928960, 2004310, 2290640, 2332288, 2700544, 2915360, 3206896, 3331840, 3375680, 3665024, 4008620, 4581280, 4664576, 5830720, 6413792, 6751360, 7330048, 8017240, 9162560, 11661440, 12827584, 13502720, 16034480, 18325120, 23322880, 25655168, 32068960, 36650240, 51310336, 64137920, 128275840, 256551680]

約数ペア:

[(1, 256551680), (2, 128275840), (4, 64137920), (5, 51310336), (7, 36650240), (8, 32068960), (10, 25655168), (11, 23322880), (14, 18325120), (16, 16034480), (19, 13502720), (20, 12827584), (22, 11661440), (28, 9162560), (32, 8017240), (35, 7330048), (38, 6751360), (40, 6413792), (44, 5830720), (55, 4664576), (56, 4581280), (64, 4008620), (70, 3665024), (76, 3375680), (77, 3331840), (80, 3206896), (88, 2915360), (95, 2700544), (110, 2332288), (112, 2290640), (128, 2004310), (133, 1928960), (137, 1872640), (140, 1832512), (152, 1687840), (154, 1665920), (160, 1603448), (176, 1457680), (190, 1350272), (209, 1227520), (220, 1166144), (224, 1145320), (256, 1002155), (266, 964480), (274, 936320), (280, 916256), (304, 843920), (308, 832960), (320, 801724), (352, 728840), (380, 675136), (385, 666368), (418, 613760), (440, 583072), (448, 572660), (532, 482240), (548, 468160), (560, 458128), (608, 421960), (616, 416480), (640, 400862), (665, 385792), (685, 374528), (704, 364420), (760, 337568), (770, 333184), (836, 306880), (880, 291536), (896, 286330), (959, 267520), (1045, 245504), (1064, 241120), (1096, 234080), (1120, 229064), (1216, 210980), (1232, 208240), (1280, 200431), (1330, 192896), (1370, 187264), (1408, 182210), (1463, 175360), (1507, 170240), (1520, 168784), (1540, 166592), (1672, 153440), (1760, 145768), (1792, 143165), (1918, 133760), (2090, 122752), (2128, 120560), (2192, 117040), (2240, 114532), (2432, 105490), (2464, 104120), (2603, 98560), (2660, 96448), (2740, 93632), (2816, 91105), (2926, 87680), (3014, 85120), (3040, 84392), (3080, 83296), (3344, 76720), (3520, 72884), (3836, 66880), (4180, 61376), (4256, 60280), (4384, 58520), (4480, 57266), (4795, 53504), (4864, 52745), (4928, 52060), (5206, 49280), (5320, 48224), (5480, 46816), (5852, 43840), (6028, 42560), (6080, 42196), (6160, 41648), (6688, 38360), (7040, 36442), (7315, 35072), (7535, 34048), (7672, 33440), (8360, 30688), (8512, 30140), (8768, 29260), (8960, 28633), (9590, 26752), (9856, 26030), (10412, 24640), (10549, 24320), (10640, 24112), (10960, 23408), (11704, 21920), (12056, 21280), (12160, 21098), (12320, 20824), (13015, 19712), (13376, 19180), (14080, 18221), (14630, 17536), (15070, 17024), (15344, 16720)]