128458880

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:358

約数の個数: 128

約数和(自身を含む): 341055360

約数和(自身を除く): 212596480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 71, 80, 88, 110, 128, 142, 160, 176, 220, 257, 284, 320, 352, 355, 440, 514, 568, 640, 704, 710, 781, 880, 1028, 1136, 1285, 1408, 1420, 1562, 1760, 2056, 2272, 2570, 2827, 2840, 3124, 3520, 3905, 4112, 4544, 5140, 5654, 5680, 6248, 7040, 7810, 8224, 9088, 10280, 11308, 11360, 12496, 14135, 15620, 16448, 18247, 20560, 22616, 22720, 24992, 28270, 31240, 32896, 36494, 41120, 45232, 45440, 49984, 56540, 62480, 72988, 82240, 90464, 91235, 99968, 113080, 124960, 145976, 164480, 180928, 182470, 200717, 226160, 249920, 291952, 361856, 364940, 401434, 452320, 499840, 583904, 729880, 802868, 904640, 1003585, 1167808, 1459760, 1605736, 1809280, 2007170, 2335616, 2919520, 3211472, 4014340, 5839040, 6422944, 8028680, 11678080, 12845888, 16057360, 25691776, 32114720, 64229440, 128458880]

約数ペア:

[(1, 128458880), (2, 64229440), (4, 32114720), (5, 25691776), (8, 16057360), (10, 12845888), (11, 11678080), (16, 8028680), (20, 6422944), (22, 5839040), (32, 4014340), (40, 3211472), (44, 2919520), (55, 2335616), (64, 2007170), (71, 1809280), (80, 1605736), (88, 1459760), (110, 1167808), (128, 1003585), (142, 904640), (160, 802868), (176, 729880), (220, 583904), (257, 499840), (284, 452320), (320, 401434), (352, 364940), (355, 361856), (440, 291952), (514, 249920), (568, 226160), (640, 200717), (704, 182470), (710, 180928), (781, 164480), (880, 145976), (1028, 124960), (1136, 113080), (1285, 99968), (1408, 91235), (1420, 90464), (1562, 82240), (1760, 72988), (2056, 62480), (2272, 56540), (2570, 49984), (2827, 45440), (2840, 45232), (3124, 41120), (3520, 36494), (3905, 32896), (4112, 31240), (4544, 28270), (5140, 24992), (5654, 22720), (5680, 22616), (6248, 20560), (7040, 18247), (7810, 16448), (8224, 15620), (9088, 14135), (10280, 12496), (11308, 11360)]