20097975680

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{1721}}^1$

素因数の和:2068

約数の個数: 128

約数和(自身を含む): 48941444160

約数和(自身を除く): 28843468480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 257, 284, 320, 355, 514, 568, 640, 710, 1028, 1136, 1285, 1420, 1721, 2056, 2272, 2570, 2840, 3442, 4112, 4544, 5140, 5680, 6884, 8224, 8605, 9088, 10280, 11360, 13768, 16448, 17210, 18247, 20560, 22720, 27536, 32896, 34420, 36494, 41120, 45440, 55072, 68840, 72988, 82240, 91235, 110144, 122191, 137680, 145976, 164480, 182470, 220288, 244382, 275360, 291952, 364940, 442297, 488764, 550720, 583904, 610955, 729880, 884594, 977528, 1101440, 1167808, 1221910, 1459760, 1769188, 1955056, 2211485, 2335616, 2443820, 2919520, 3538376, 3910112, 4422970, 4887640, 5839040, 7076752, 7820224, 8845940, 9775280, 11678080, 14153504, 15640448, 17691880, 19550560, 28307008, 31403087, 35383760, 39101120, 56614016, 62806174, 70767520, 78202240, 125612348, 141535040, 157015435, 251224696, 283070080, 314030870, 502449392, 628061740, 1004898784, 1256123480, 2009797568, 2512246960, 4019595136, 5024493920, 10048987840, 20097975680]

約数ペア:

[(1, 20097975680), (2, 10048987840), (4, 5024493920), (5, 4019595136), (8, 2512246960), (10, 2009797568), (16, 1256123480), (20, 1004898784), (32, 628061740), (40, 502449392), (64, 314030870), (71, 283070080), (80, 251224696), (128, 157015435), (142, 141535040), (160, 125612348), (257, 78202240), (284, 70767520), (320, 62806174), (355, 56614016), (514, 39101120), (568, 35383760), (640, 31403087), (710, 28307008), (1028, 19550560), (1136, 17691880), (1285, 15640448), (1420, 14153504), (1721, 11678080), (2056, 9775280), (2272, 8845940), (2570, 7820224), (2840, 7076752), (3442, 5839040), (4112, 4887640), (4544, 4422970), (5140, 3910112), (5680, 3538376), (6884, 2919520), (8224, 2443820), (8605, 2335616), (9088, 2211485), (10280, 1955056), (11360, 1769188), (13768, 1459760), (16448, 1221910), (17210, 1167808), (18247, 1101440), (20560, 977528), (22720, 884594), (27536, 729880), (32896, 610955), (34420, 583904), (36494, 550720), (41120, 488764), (45440, 442297), (55072, 364940), (68840, 291952), (72988, 275360), (82240, 244382), (91235, 220288), (110144, 182470), (122191, 164480), (137680, 145976)]