278641920

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:660

約数の個数: 144

約数和(自身を含む): 897724800

約数和(自身を除く): 619082880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 149, 160, 192, 240, 256, 298, 320, 384, 447, 480, 487, 596, 640, 745, 768, 894, 960, 974, 1192, 1280, 1461, 1490, 1788, 1920, 1948, 2235, 2384, 2435, 2922, 2980, 3576, 3840, 3896, 4470, 4768, 4870, 5844, 5960, 7152, 7305, 7792, 8940, 9536, 9740, 11688, 11920, 14304, 14610, 15584, 17880, 19072, 19480, 23376, 23840, 28608, 29220, 31168, 35760, 38144, 38960, 46752, 47680, 57216, 58440, 62336, 71520, 72563, 77920, 93504, 95360, 114432, 116880, 124672, 143040, 145126, 155840, 187008, 190720, 217689, 233760, 286080, 290252, 311680, 362815, 374016, 435378, 467520, 572160, 580504, 623360, 725630, 870756, 935040, 1088445, 1161008, 1451260, 1741512, 1870080, 2176890, 2322016, 2902520, 3483024, 4353780, 4644032, 5805040, 6966048, 8707560, 9288064, 11610080, 13932096, 17415120, 18576128, 23220160, 27864192, 34830240, 46440320, 55728384, 69660480, 92880640, 139320960, 278641920]

約数ペア:

[(1, 278641920), (2, 139320960), (3, 92880640), (4, 69660480), (5, 55728384), (6, 46440320), (8, 34830240), (10, 27864192), (12, 23220160), (15, 18576128), (16, 17415120), (20, 13932096), (24, 11610080), (30, 9288064), (32, 8707560), (40, 6966048), (48, 5805040), (60, 4644032), (64, 4353780), (80, 3483024), (96, 2902520), (120, 2322016), (128, 2176890), (149, 1870080), (160, 1741512), (192, 1451260), (240, 1161008), (256, 1088445), (298, 935040), (320, 870756), (384, 725630), (447, 623360), (480, 580504), (487, 572160), (596, 467520), (640, 435378), (745, 374016), (768, 362815), (894, 311680), (960, 290252), (974, 286080), (1192, 233760), (1280, 217689), (1461, 190720), (1490, 187008), (1788, 155840), (1920, 145126), (1948, 143040), (2235, 124672), (2384, 116880), (2435, 114432), (2922, 95360), (2980, 93504), (3576, 77920), (3840, 72563), (3896, 71520), (4470, 62336), (4768, 58440), (4870, 57216), (5844, 47680), (5960, 46752), (7152, 38960), (7305, 38144), (7792, 35760), (8940, 31168), (9536, 29220), (9740, 28608), (11688, 23840), (11920, 23376), (14304, 19480), (14610, 19072), (15584, 17880)]