257128320

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{853}}^1$

素因数の和:1032

約数の個数: 128

約数和(自身を含む): 825783840

約数和(自身を除く): 568655520

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, 157, 160, 192, 240, 314, 320, 384, 471, 480, 628, 640, 785, 853, 942, 960, 1256, 1570, 1706, 1884, 1920, 2355, 2512, 2559, 3140, 3412, 3768, 4265, 4710, 5024, 5118, 6280, 6824, 7536, 8530, 9420, 10048, 10236, 12560, 12795, 13648, 15072, 17060, 18840, 20096, 20472, 25120, 25590, 27296, 30144, 34120, 37680, 40944, 50240, 51180, 54592, 60288, 68240, 75360, 81888, 100480, 102360, 109184, 133921, 136480, 150720, 163776, 204720, 267842, 272960, 301440, 327552, 401763, 409440, 535684, 545920, 669605, 803526, 818880, 1071368, 1339210, 1607052, 1637760, 2008815, 2142736, 2678420, 3214104, 4017630, 4285472, 5356840, 6428208, 8035260, 8570944, 10713680, 12856416, 16070520, 17141888, 21427360, 25712832, 32141040, 42854720, 51425664, 64282080, 85709440, 128564160, 257128320]

約数ペア:

[(1, 257128320), (2, 128564160), (3, 85709440), (4, 64282080), (5, 51425664), (6, 42854720), (8, 32141040), (10, 25712832), (12, 21427360), (15, 17141888), (16, 16070520), (20, 12856416), (24, 10713680), (30, 8570944), (32, 8035260), (40, 6428208), (48, 5356840), (60, 4285472), (64, 4017630), (80, 3214104), (96, 2678420), (120, 2142736), (128, 2008815), (157, 1637760), (160, 1607052), (192, 1339210), (240, 1071368), (314, 818880), (320, 803526), (384, 669605), (471, 545920), (480, 535684), (628, 409440), (640, 401763), (785, 327552), (853, 301440), (942, 272960), (960, 267842), (1256, 204720), (1570, 163776), (1706, 150720), (1884, 136480), (1920, 133921), (2355, 109184), (2512, 102360), (2559, 100480), (3140, 81888), (3412, 75360), (3768, 68240), (4265, 60288), (4710, 54592), (5024, 51180), (5118, 50240), (6280, 40944), (6824, 37680), (7536, 34120), (8530, 30144), (9420, 27296), (10048, 25590), (10236, 25120), (12560, 20472), (12795, 20096), (13648, 18840), (15072, 17060)]