256767840

素因数分解:

$2^5\times 3^3\times 5^1\times 7^2\times {\mathrm{1213}}^1$

素因数の和:1251

約数の個数: 288

約数和(自身を含む): 1046273760

約数和(自身を除く): 789505920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 98, 105, 108, 112, 120, 126, 135, 140, 144, 147, 160, 168, 180, 189, 196, 210, 216, 224, 240, 245, 252, 270, 280, 288, 294, 315, 336, 360, 378, 392, 420, 432, 441, 480, 490, 504, 540, 560, 588, 630, 672, 720, 735, 756, 784, 840, 864, 882, 945, 980, 1008, 1080, 1120, 1176, 1213, 1260, 1323, 1440, 1470, 1512, 1568, 1680, 1764, 1890, 1960, 2016, 2160, 2205, 2352, 2426, 2520, 2646, 2940, 3024, 3360, 3528, 3639, 3780, 3920, 4320, 4410, 4704, 4852, 5040, 5292, 5880, 6048, 6065, 6615, 7056, 7278, 7560, 7840, 8491, 8820, 9704, 10080, 10584, 10917, 11760, 12130, 13230, 14112, 14556, 15120, 16982, 17640, 18195, 19408, 21168, 21834, 23520, 24260, 25473, 26460, 29112, 30240, 32751, 33964, 35280, 36390, 38816, 42336, 42455, 43668, 48520, 50946, 52920, 54585, 58224, 59437, 65502, 67928, 70560, 72780, 76419, 84910, 87336, 97040, 101892, 105840, 109170, 116448, 118874, 127365, 131004, 135856, 145560, 152838, 163755, 169820, 174672, 178311, 194080, 203784, 211680, 218340, 229257, 237748, 254730, 262008, 271712, 291120, 297185, 305676, 327510, 339640, 349344, 356622, 382095, 407568, 436680, 458514, 475496, 509460, 524016, 534933, 582240, 594370, 611352, 655020, 679280, 713244, 764190, 815136, 873360, 891555, 917028, 950992, 1018920, 1048032, 1069866, 1146285, 1188740, 1222704, 1310040, 1358560, 1426488, 1528380, 1604799, 1746720, 1783110, 1834056, 1901984, 2037840, 2139732, 2292570, 2377480, 2445408, 2620080, 2674665, 2852976, 3056760, 3209598, 3566220, 3668112, 4075680, 4279464, 4585140, 4754960, 5240160, 5349330, 5705952, 6113520, 6419196, 7132440, 7336224, 8023995, 8558928, 9170280, 9509920, 10698660, 12227040, 12838392, 14264880, 16047990, 17117856, 18340560, 21397320, 25676784, 28529760, 32095980, 36681120, 42794640, 51353568, 64191960, 85589280, 128383920, 256767840]

約数ペア:

[(1, 256767840), (2, 128383920), (3, 85589280), (4, 64191960), (5, 51353568), (6, 42794640), (7, 36681120), (8, 32095980), (9, 28529760), (10, 25676784), (12, 21397320), (14, 18340560), (15, 17117856), (16, 16047990), (18, 14264880), (20, 12838392), (21, 12227040), (24, 10698660), (27, 9509920), (28, 9170280), (30, 8558928), (32, 8023995), (35, 7336224), (36, 7132440), (40, 6419196), (42, 6113520), (45, 5705952), (48, 5349330), (49, 5240160), (54, 4754960), (56, 4585140), (60, 4279464), (63, 4075680), (70, 3668112), (72, 3566220), (80, 3209598), (84, 3056760), (90, 2852976), (96, 2674665), (98, 2620080), (105, 2445408), (108, 2377480), (112, 2292570), (120, 2139732), (126, 2037840), (135, 1901984), (140, 1834056), (144, 1783110), (147, 1746720), (160, 1604799), (168, 1528380), (180, 1426488), (189, 1358560), (196, 1310040), (210, 1222704), (216, 1188740), (224, 1146285), (240, 1069866), (245, 1048032), (252, 1018920), (270, 950992), (280, 917028), (288, 891555), (294, 873360), (315, 815136), (336, 764190), (360, 713244), (378, 679280), (392, 655020), (420, 611352), (432, 594370), (441, 582240), (480, 534933), (490, 524016), (504, 509460), (540, 475496), (560, 458514), (588, 436680), (630, 407568), (672, 382095), (720, 356622), (735, 349344), (756, 339640), (784, 327510), (840, 305676), (864, 297185), (882, 291120), (945, 271712), (980, 262008), (1008, 254730), (1080, 237748), (1120, 229257), (1176, 218340), (1213, 211680), (1260, 203784), (1323, 194080), (1440, 178311), (1470, 174672), (1512, 169820), (1568, 163755), (1680, 152838), (1764, 145560), (1890, 135856), (1960, 131004), (2016, 127365), (2160, 118874), (2205, 116448), (2352, 109170), (2426, 105840), (2520, 101892), (2646, 97040), (2940, 87336), (3024, 84910), (3360, 76419), (3528, 72780), (3639, 70560), (3780, 67928), (3920, 65502), (4320, 59437), (4410, 58224), (4704, 54585), (4852, 52920), (5040, 50946), (5292, 48520), (5880, 43668), (6048, 42455), (6065, 42336), (6615, 38816), (7056, 36390), (7278, 35280), (7560, 33964), (7840, 32751), (8491, 30240), (8820, 29112), (9704, 26460), (10080, 25473), (10584, 24260), (10917, 23520), (11760, 21834), (12130, 21168), (13230, 19408), (14112, 18195), (14556, 17640), (15120, 16982)]