256615128

素因数分解:

$2^3\times 3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 320

約数和(自身を含む): 926956800

約数和(自身を除く): 670341672

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 18, 21, 22, 24, 27, 28, 33, 36, 37, 42, 44, 54, 56, 63, 66, 72, 74, 77, 81, 84, 88, 99, 108, 111, 126, 132, 139, 148, 154, 162, 168, 189, 198, 216, 222, 231, 252, 259, 264, 278, 296, 297, 308, 324, 333, 378, 396, 407, 417, 444, 462, 504, 518, 556, 567, 594, 616, 648, 666, 693, 756, 777, 792, 814, 834, 888, 891, 924, 973, 999, 1036, 1112, 1134, 1188, 1221, 1251, 1332, 1386, 1512, 1529, 1554, 1628, 1668, 1782, 1848, 1946, 1998, 2072, 2079, 2268, 2331, 2376, 2442, 2502, 2664, 2772, 2849, 2919, 2997, 3058, 3108, 3256, 3336, 3564, 3663, 3753, 3892, 3996, 4158, 4536, 4587, 4662, 4884, 5004, 5143, 5544, 5698, 5838, 5994, 6116, 6216, 6237, 6993, 7128, 7326, 7506, 7784, 7992, 8316, 8547, 8757, 9174, 9324, 9768, 10008, 10286, 10703, 10989, 11259, 11396, 11676, 11988, 12232, 12474, 13761, 13986, 14652, 15012, 15429, 16632, 17094, 17514, 18348, 18648, 20572, 20979, 21406, 21978, 22518, 22792, 23352, 23976, 24948, 25641, 26271, 27522, 27972, 29304, 30024, 30858, 32109, 32967, 34188, 35028, 36001, 36696, 41144, 41283, 41958, 42812, 43956, 45036, 46287, 49896, 51282, 52542, 55044, 55944, 56573, 61716, 64218, 65934, 68376, 70056, 72002, 76923, 78813, 82566, 83916, 85624, 87912, 90072, 92574, 96327, 102564, 105084, 108003, 110088, 113146, 123432, 123849, 128436, 131868, 138861, 144004, 153846, 157626, 165132, 167832, 169719, 185148, 192654, 205128, 210168, 216006, 226292, 230769, 247698, 256872, 263736, 277722, 288008, 288981, 307692, 315252, 324009, 330264, 339438, 370296, 385308, 396011, 416583, 432012, 452584, 461538, 495396, 509157, 555444, 577962, 615384, 630504, 648018, 678876, 770616, 792022, 833166, 864024, 866943, 923076, 972027, 990792, 1018314, 1110888, 1155924, 1188033, 1296036, 1357752, 1527471, 1584044, 1666332, 1733886, 1846152, 1944054, 2036628, 2311848, 2376066, 2592072, 2916081, 3054942, 3168088, 3332664, 3467772, 3564099, 3888108, 4073256, 4582413, 4752132, 5832162, 6109884, 6935544, 7128198, 7776216, 9164826, 9504264, 10692297, 11664324, 12219768, 14256396, 18329652, 21384594, 23328648, 28512792, 32076891, 36659304, 42769188, 64153782, 85538376, 128307564, 256615128]

約数ペア:

[(1, 256615128), (2, 128307564), (3, 85538376), (4, 64153782), (6, 42769188), (7, 36659304), (8, 32076891), (9, 28512792), (11, 23328648), (12, 21384594), (14, 18329652), (18, 14256396), (21, 12219768), (22, 11664324), (24, 10692297), (27, 9504264), (28, 9164826), (33, 7776216), (36, 7128198), (37, 6935544), (42, 6109884), (44, 5832162), (54, 4752132), (56, 4582413), (63, 4073256), (66, 3888108), (72, 3564099), (74, 3467772), (77, 3332664), (81, 3168088), (84, 3054942), (88, 2916081), (99, 2592072), (108, 2376066), (111, 2311848), (126, 2036628), (132, 1944054), (139, 1846152), (148, 1733886), (154, 1666332), (162, 1584044), (168, 1527471), (189, 1357752), (198, 1296036), (216, 1188033), (222, 1155924), (231, 1110888), (252, 1018314), (259, 990792), (264, 972027), (278, 923076), (296, 866943), (297, 864024), (308, 833166), (324, 792022), (333, 770616), (378, 678876), (396, 648018), (407, 630504), (417, 615384), (444, 577962), (462, 555444), (504, 509157), (518, 495396), (556, 461538), (567, 452584), (594, 432012), (616, 416583), (648, 396011), (666, 385308), (693, 370296), (756, 339438), (777, 330264), (792, 324009), (814, 315252), (834, 307692), (888, 288981), (891, 288008), (924, 277722), (973, 263736), (999, 256872), (1036, 247698), (1112, 230769), (1134, 226292), (1188, 216006), (1221, 210168), (1251, 205128), (1332, 192654), (1386, 185148), (1512, 169719), (1529, 167832), (1554, 165132), (1628, 157626), (1668, 153846), (1782, 144004), (1848, 138861), (1946, 131868), (1998, 128436), (2072, 123849), (2079, 123432), (2268, 113146), (2331, 110088), (2376, 108003), (2442, 105084), (2502, 102564), (2664, 96327), (2772, 92574), (2849, 90072), (2919, 87912), (2997, 85624), (3058, 83916), (3108, 82566), (3256, 78813), (3336, 76923), (3564, 72002), (3663, 70056), (3753, 68376), (3892, 65934), (3996, 64218), (4158, 61716), (4536, 56573), (4587, 55944), (4662, 55044), (4884, 52542), (5004, 51282), (5143, 49896), (5544, 46287), (5698, 45036), (5838, 43956), (5994, 42812), (6116, 41958), (6216, 41283), (6237, 41144), (6993, 36696), (7128, 36001), (7326, 35028), (7506, 34188), (7784, 32967), (7992, 32109), (8316, 30858), (8547, 30024), (8757, 29304), (9174, 27972), (9324, 27522), (9768, 26271), (10008, 25641), (10286, 24948), (10703, 23976), (10989, 23352), (11259, 22792), (11396, 22518), (11676, 21978), (11988, 21406), (12232, 20979), (12474, 20572), (13761, 18648), (13986, 18348), (14652, 17514), (15012, 17094), (15429, 16632)]