81664000

素因数分解:

$2^{11}\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1$

素因数の和:77

約数の個数: 192

約数和(自身を含む): 229975200

約数和(自身を除く): 148311200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 29, 32, 40, 44, 50, 55, 58, 64, 80, 88, 100, 110, 116, 125, 128, 145, 160, 176, 200, 220, 232, 250, 256, 275, 290, 319, 320, 352, 400, 440, 464, 500, 512, 550, 580, 638, 640, 704, 725, 800, 880, 928, 1000, 1024, 1100, 1160, 1276, 1280, 1375, 1408, 1450, 1595, 1600, 1760, 1856, 2000, 2048, 2200, 2320, 2552, 2560, 2750, 2816, 2900, 3190, 3200, 3520, 3625, 3712, 4000, 4400, 4640, 5104, 5120, 5500, 5632, 5800, 6380, 6400, 7040, 7250, 7424, 7975, 8000, 8800, 9280, 10208, 10240, 11000, 11264, 11600, 12760, 12800, 14080, 14500, 14848, 15950, 16000, 17600, 18560, 20416, 22000, 22528, 23200, 25520, 25600, 28160, 29000, 29696, 31900, 32000, 35200, 37120, 39875, 40832, 44000, 46400, 51040, 51200, 56320, 58000, 59392, 63800, 64000, 70400, 74240, 79750, 81664, 88000, 92800, 102080, 112640, 116000, 127600, 128000, 140800, 148480, 159500, 163328, 176000, 185600, 204160, 232000, 255200, 256000, 281600, 296960, 319000, 326656, 352000, 371200, 408320, 464000, 510400, 563200, 638000, 653312, 704000, 742400, 816640, 928000, 1020800, 1276000, 1408000, 1484800, 1633280, 1856000, 2041600, 2552000, 2816000, 3266560, 3712000, 4083200, 5104000, 7424000, 8166400, 10208000, 16332800, 20416000, 40832000, 81664000]

約数ペア:

[(1, 81664000), (2, 40832000), (4, 20416000), (5, 16332800), (8, 10208000), (10, 8166400), (11, 7424000), (16, 5104000), (20, 4083200), (22, 3712000), (25, 3266560), (29, 2816000), (32, 2552000), (40, 2041600), (44, 1856000), (50, 1633280), (55, 1484800), (58, 1408000), (64, 1276000), (80, 1020800), (88, 928000), (100, 816640), (110, 742400), (116, 704000), (125, 653312), (128, 638000), (145, 563200), (160, 510400), (176, 464000), (200, 408320), (220, 371200), (232, 352000), (250, 326656), (256, 319000), (275, 296960), (290, 281600), (319, 256000), (320, 255200), (352, 232000), (400, 204160), (440, 185600), (464, 176000), (500, 163328), (512, 159500), (550, 148480), (580, 140800), (638, 128000), (640, 127600), (704, 116000), (725, 112640), (800, 102080), (880, 92800), (928, 88000), (1000, 81664), (1024, 79750), (1100, 74240), (1160, 70400), (1276, 64000), (1280, 63800), (1375, 59392), (1408, 58000), (1450, 56320), (1595, 51200), (1600, 51040), (1760, 46400), (1856, 44000), (2000, 40832), (2048, 39875), (2200, 37120), (2320, 35200), (2552, 32000), (2560, 31900), (2750, 29696), (2816, 29000), (2900, 28160), (3190, 25600), (3200, 25520), (3520, 23200), (3625, 22528), (3712, 22000), (4000, 20416), (4400, 18560), (4640, 17600), (5104, 16000), (5120, 15950), (5500, 14848), (5632, 14500), (5800, 14080), (6380, 12800), (6400, 12760), (7040, 11600), (7250, 11264), (7424, 11000), (7975, 10240), (8000, 10208), (8800, 9280)]