1397903360

素因数分解:

$2^{12}\times 5^1\times 7^3\times {\mathrm{199}}^1$

素因数の和:249

約数の個数: 208

約数和(自身を含む): 3931680000

約数和(自身を除く): 2533776640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 199, 224, 245, 256, 280, 320, 343, 392, 398, 448, 490, 512, 560, 640, 686, 784, 796, 896, 980, 995, 1024, 1120, 1280, 1372, 1393, 1568, 1592, 1715, 1792, 1960, 1990, 2048, 2240, 2560, 2744, 2786, 3136, 3184, 3430, 3584, 3920, 3980, 4096, 4480, 5120, 5488, 5572, 6272, 6368, 6860, 6965, 7168, 7840, 7960, 8960, 9751, 10240, 10976, 11144, 12544, 12736, 13720, 13930, 14336, 15680, 15920, 17920, 19502, 20480, 21952, 22288, 25088, 25472, 27440, 27860, 28672, 31360, 31840, 35840, 39004, 43904, 44576, 48755, 50176, 50944, 54880, 55720, 62720, 63680, 68257, 71680, 78008, 87808, 89152, 97510, 100352, 101888, 109760, 111440, 125440, 127360, 136514, 143360, 156016, 175616, 178304, 195020, 200704, 203776, 219520, 222880, 250880, 254720, 273028, 312032, 341285, 351232, 356608, 390040, 407552, 439040, 445760, 501760, 509440, 546056, 624064, 682570, 702464, 713216, 780080, 815104, 878080, 891520, 1003520, 1018880, 1092112, 1248128, 1365140, 1404928, 1426432, 1560160, 1756160, 1783040, 2037760, 2184224, 2496256, 2730280, 2852864, 3120320, 3512320, 3566080, 4075520, 4368448, 4992512, 5460560, 5705728, 6240640, 7024640, 7132160, 8736896, 9985024, 10921120, 12481280, 14264320, 17473792, 19970048, 21842240, 24962560, 28528640, 34947584, 39940096, 43684480, 49925120, 69895168, 87368960, 99850240, 139790336, 174737920, 199700480, 279580672, 349475840, 698951680, 1397903360]

約数ペア:

[(1, 1397903360), (2, 698951680), (4, 349475840), (5, 279580672), (7, 199700480), (8, 174737920), (10, 139790336), (14, 99850240), (16, 87368960), (20, 69895168), (28, 49925120), (32, 43684480), (35, 39940096), (40, 34947584), (49, 28528640), (56, 24962560), (64, 21842240), (70, 19970048), (80, 17473792), (98, 14264320), (112, 12481280), (128, 10921120), (140, 9985024), (160, 8736896), (196, 7132160), (199, 7024640), (224, 6240640), (245, 5705728), (256, 5460560), (280, 4992512), (320, 4368448), (343, 4075520), (392, 3566080), (398, 3512320), (448, 3120320), (490, 2852864), (512, 2730280), (560, 2496256), (640, 2184224), (686, 2037760), (784, 1783040), (796, 1756160), (896, 1560160), (980, 1426432), (995, 1404928), (1024, 1365140), (1120, 1248128), (1280, 1092112), (1372, 1018880), (1393, 1003520), (1568, 891520), (1592, 878080), (1715, 815104), (1792, 780080), (1960, 713216), (1990, 702464), (2048, 682570), (2240, 624064), (2560, 546056), (2744, 509440), (2786, 501760), (3136, 445760), (3184, 439040), (3430, 407552), (3584, 390040), (3920, 356608), (3980, 351232), (4096, 341285), (4480, 312032), (5120, 273028), (5488, 254720), (5572, 250880), (6272, 222880), (6368, 219520), (6860, 203776), (6965, 200704), (7168, 195020), (7840, 178304), (7960, 175616), (8960, 156016), (9751, 143360), (10240, 136514), (10976, 127360), (11144, 125440), (12544, 111440), (12736, 109760), (13720, 101888), (13930, 100352), (14336, 97510), (15680, 89152), (15920, 87808), (17920, 78008), (19502, 71680), (20480, 68257), (21952, 63680), (22288, 62720), (25088, 55720), (25472, 54880), (27440, 50944), (27860, 50176), (28672, 48755), (31360, 44576), (31840, 43904), (35840, 39004)]