20485465760

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{919}}^1\times {\mathrm{1097}}^1$

素因数の和:2158

約数の個数: 96

約数和(自身を含む): 48875581440

約数和(自身を除く): 28390115680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 919, 1016, 1097, 1270, 1838, 2032, 2194, 2540, 3676, 4064, 4388, 4595, 5080, 5485, 7352, 8776, 9190, 10160, 10970, 14704, 17552, 18380, 20320, 21940, 29408, 35104, 36760, 43880, 73520, 87760, 116713, 139319, 147040, 175520, 233426, 278638, 466852, 557276, 583565, 696595, 933704, 1008143, 1114552, 1167130, 1393190, 1867408, 2016286, 2229104, 2334260, 2786380, 3734816, 4032572, 4458208, 4668520, 5040715, 5572760, 8065144, 9337040, 10081430, 11145520, 16130288, 18674080, 20162860, 22291040, 32260576, 40325720, 80651440, 128034161, 161302880, 256068322, 512136644, 640170805, 1024273288, 1280341610, 2048546576, 2560683220, 4097093152, 5121366440, 10242732880, 20485465760]

約数ペア:

[(1, 20485465760), (2, 10242732880), (4, 5121366440), (5, 4097093152), (8, 2560683220), (10, 2048546576), (16, 1280341610), (20, 1024273288), (32, 640170805), (40, 512136644), (80, 256068322), (127, 161302880), (160, 128034161), (254, 80651440), (508, 40325720), (635, 32260576), (919, 22291040), (1016, 20162860), (1097, 18674080), (1270, 16130288), (1838, 11145520), (2032, 10081430), (2194, 9337040), (2540, 8065144), (3676, 5572760), (4064, 5040715), (4388, 4668520), (4595, 4458208), (5080, 4032572), (5485, 3734816), (7352, 2786380), (8776, 2334260), (9190, 2229104), (10160, 2016286), (10970, 1867408), (14704, 1393190), (17552, 1167130), (18380, 1114552), (20320, 1008143), (21940, 933704), (29408, 696595), (35104, 583565), (36760, 557276), (43880, 466852), (73520, 278638), (87760, 233426), (116713, 175520), (139319, 147040)]