28647080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 128

約数和(自身を含む): 82114560

約数和(自身を除く): 53467480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 71, 77, 88, 110, 131, 140, 142, 154, 220, 262, 280, 284, 308, 355, 385, 440, 497, 524, 568, 616, 655, 710, 770, 781, 917, 994, 1048, 1310, 1420, 1441, 1540, 1562, 1834, 1988, 2485, 2620, 2840, 2882, 3080, 3124, 3668, 3905, 3976, 4585, 4970, 5240, 5467, 5764, 6248, 7205, 7336, 7810, 9170, 9301, 9940, 10087, 10934, 11528, 14410, 15620, 18340, 18602, 19880, 20174, 21868, 27335, 28820, 31240, 36680, 37204, 40348, 43736, 46505, 50435, 54670, 57640, 65107, 74408, 80696, 93010, 100870, 102311, 109340, 130214, 186020, 201740, 204622, 218680, 260428, 325535, 372040, 403480, 409244, 511555, 520856, 651070, 716177, 818488, 1023110, 1302140, 1432354, 2046220, 2604280, 2864708, 3580885, 4092440, 5729416, 7161770, 14323540, 28647080]

約数ペア:

[(1, 28647080), (2, 14323540), (4, 7161770), (5, 5729416), (7, 4092440), (8, 3580885), (10, 2864708), (11, 2604280), (14, 2046220), (20, 1432354), (22, 1302140), (28, 1023110), (35, 818488), (40, 716177), (44, 651070), (55, 520856), (56, 511555), (70, 409244), (71, 403480), (77, 372040), (88, 325535), (110, 260428), (131, 218680), (140, 204622), (142, 201740), (154, 186020), (220, 130214), (262, 109340), (280, 102311), (284, 100870), (308, 93010), (355, 80696), (385, 74408), (440, 65107), (497, 57640), (524, 54670), (568, 50435), (616, 46505), (655, 43736), (710, 40348), (770, 37204), (781, 36680), (917, 31240), (994, 28820), (1048, 27335), (1310, 21868), (1420, 20174), (1441, 19880), (1540, 18602), (1562, 18340), (1834, 15620), (1988, 14410), (2485, 11528), (2620, 10934), (2840, 10087), (2882, 9940), (3080, 9301), (3124, 9170), (3668, 7810), (3905, 7336), (3976, 7205), (4585, 6248), (4970, 5764), (5240, 5467)]