1285691520

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21601}}^1$

素因数の和:21654

約数の個数: 128

約数和(自身を含む): 4230535680

約数和(自身を除く): 2944844160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 310, 320, 372, 384, 465, 480, 496, 620, 640, 744, 930, 960, 992, 1240, 1488, 1860, 1920, 1984, 2480, 2976, 3720, 3968, 4960, 5952, 7440, 9920, 11904, 14880, 19840, 21601, 29760, 43202, 59520, 64803, 86404, 108005, 129606, 172808, 216010, 259212, 324015, 345616, 432020, 518424, 648030, 669631, 691232, 864040, 1036848, 1296060, 1339262, 1382464, 1728080, 2008893, 2073696, 2592120, 2678524, 2764928, 3348155, 3456160, 4017786, 4147392, 5184240, 5357048, 6696310, 6912320, 8035572, 8294784, 10044465, 10368480, 10714096, 13392620, 13824640, 16071144, 20088930, 20736960, 21428192, 26785240, 32142288, 40177860, 41473920, 42856384, 53570480, 64284576, 80355720, 85712768, 107140960, 128569152, 160711440, 214281920, 257138304, 321422880, 428563840, 642845760, 1285691520]

約数ペア:

[(1, 1285691520), (2, 642845760), (3, 428563840), (4, 321422880), (5, 257138304), (6, 214281920), (8, 160711440), (10, 128569152), (12, 107140960), (15, 85712768), (16, 80355720), (20, 64284576), (24, 53570480), (30, 42856384), (31, 41473920), (32, 40177860), (40, 32142288), (48, 26785240), (60, 21428192), (62, 20736960), (64, 20088930), (80, 16071144), (93, 13824640), (96, 13392620), (120, 10714096), (124, 10368480), (128, 10044465), (155, 8294784), (160, 8035572), (186, 6912320), (192, 6696310), (240, 5357048), (248, 5184240), (310, 4147392), (320, 4017786), (372, 3456160), (384, 3348155), (465, 2764928), (480, 2678524), (496, 2592120), (620, 2073696), (640, 2008893), (744, 1728080), (930, 1382464), (960, 1339262), (992, 1296060), (1240, 1036848), (1488, 864040), (1860, 691232), (1920, 669631), (1984, 648030), (2480, 518424), (2976, 432020), (3720, 345616), (3968, 324015), (4960, 259212), (5952, 216010), (7440, 172808), (9920, 129606), (11904, 108005), (14880, 86404), (19840, 64803), (21601, 59520), (29760, 43202)]