256391520

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{991}}^1$

素因数の和:1034

約数の個数: 288

約数和(自身を含む): 1025934336

約数和(自身を除く): 769542816

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 32, 33, 35, 40, 42, 44, 48, 49, 55, 56, 60, 66, 70, 77, 80, 84, 88, 96, 98, 105, 110, 112, 120, 132, 140, 147, 154, 160, 165, 168, 176, 196, 210, 220, 224, 231, 240, 245, 264, 280, 294, 308, 330, 336, 352, 385, 392, 420, 440, 462, 480, 490, 528, 539, 560, 588, 616, 660, 672, 735, 770, 784, 840, 880, 924, 980, 991, 1056, 1078, 1120, 1155, 1176, 1232, 1320, 1470, 1540, 1568, 1617, 1680, 1760, 1848, 1960, 1982, 2156, 2310, 2352, 2464, 2640, 2695, 2940, 2973, 3080, 3234, 3360, 3696, 3920, 3964, 4312, 4620, 4704, 4955, 5280, 5390, 5880, 5946, 6160, 6468, 6937, 7392, 7840, 7928, 8085, 8624, 9240, 9910, 10780, 10901, 11760, 11892, 12320, 12936, 13874, 14865, 15856, 16170, 17248, 18480, 19820, 20811, 21560, 21802, 23520, 23784, 25872, 27748, 29730, 31712, 32340, 32703, 34685, 36960, 39640, 41622, 43120, 43604, 47568, 48559, 51744, 54505, 55496, 59460, 64680, 65406, 69370, 76307, 79280, 83244, 86240, 87208, 95136, 97118, 104055, 109010, 110992, 118920, 129360, 130812, 138740, 145677, 152614, 158560, 163515, 166488, 174416, 194236, 208110, 218020, 221984, 228921, 237840, 242795, 258720, 261624, 277480, 291354, 305228, 327030, 332976, 348832, 381535, 388472, 416220, 436040, 457842, 475680, 485590, 523248, 534149, 554960, 582708, 610456, 654060, 665952, 728385, 763070, 776944, 832440, 872080, 915684, 971180, 1046496, 1068298, 1109920, 1144605, 1165416, 1220912, 1308120, 1456770, 1526140, 1553888, 1602447, 1664880, 1744160, 1831368, 1942360, 2136596, 2289210, 2330832, 2441824, 2616240, 2670745, 2913540, 3052280, 3204894, 3329760, 3662736, 3884720, 4273192, 4578420, 4661664, 5232480, 5341490, 5827080, 6104560, 6409788, 7325472, 7769440, 8012235, 8546384, 9156840, 10682980, 11654160, 12209120, 12819576, 16024470, 17092768, 18313680, 21365960, 23308320, 25639152, 32048940, 36627360, 42731920, 51278304, 64097880, 85463840, 128195760, 256391520]

約数ペア:

[(1, 256391520), (2, 128195760), (3, 85463840), (4, 64097880), (5, 51278304), (6, 42731920), (7, 36627360), (8, 32048940), (10, 25639152), (11, 23308320), (12, 21365960), (14, 18313680), (15, 17092768), (16, 16024470), (20, 12819576), (21, 12209120), (22, 11654160), (24, 10682980), (28, 9156840), (30, 8546384), (32, 8012235), (33, 7769440), (35, 7325472), (40, 6409788), (42, 6104560), (44, 5827080), (48, 5341490), (49, 5232480), (55, 4661664), (56, 4578420), (60, 4273192), (66, 3884720), (70, 3662736), (77, 3329760), (80, 3204894), (84, 3052280), (88, 2913540), (96, 2670745), (98, 2616240), (105, 2441824), (110, 2330832), (112, 2289210), (120, 2136596), (132, 1942360), (140, 1831368), (147, 1744160), (154, 1664880), (160, 1602447), (165, 1553888), (168, 1526140), (176, 1456770), (196, 1308120), (210, 1220912), (220, 1165416), (224, 1144605), (231, 1109920), (240, 1068298), (245, 1046496), (264, 971180), (280, 915684), (294, 872080), (308, 832440), (330, 776944), (336, 763070), (352, 728385), (385, 665952), (392, 654060), (420, 610456), (440, 582708), (462, 554960), (480, 534149), (490, 523248), (528, 485590), (539, 475680), (560, 457842), (588, 436040), (616, 416220), (660, 388472), (672, 381535), (735, 348832), (770, 332976), (784, 327030), (840, 305228), (880, 291354), (924, 277480), (980, 261624), (991, 258720), (1056, 242795), (1078, 237840), (1120, 228921), (1155, 221984), (1176, 218020), (1232, 208110), (1320, 194236), (1470, 174416), (1540, 166488), (1568, 163515), (1617, 158560), (1680, 152614), (1760, 145677), (1848, 138740), (1960, 130812), (1982, 129360), (2156, 118920), (2310, 110992), (2352, 109010), (2464, 104055), (2640, 97118), (2695, 95136), (2940, 87208), (2973, 86240), (3080, 83244), (3234, 79280), (3360, 76307), (3696, 69370), (3920, 65406), (3964, 64680), (4312, 59460), (4620, 55496), (4704, 54505), (4955, 51744), (5280, 48559), (5390, 47568), (5880, 43604), (5946, 43120), (6160, 41622), (6468, 39640), (6937, 36960), (7392, 34685), (7840, 32703), (7928, 32340), (8085, 31712), (8624, 29730), (9240, 27748), (9910, 25872), (10780, 23784), (10901, 23520), (11760, 21802), (11892, 21560), (12320, 20811), (12936, 19820), (13874, 18480), (14865, 17248), (15856, 16170)]