20749920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:468

約数の個数: 96

約数和(自身を含む): 66044160

約数和(自身を除く): 45294240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 139, 160, 240, 278, 311, 417, 480, 556, 622, 695, 834, 933, 1112, 1244, 1390, 1555, 1668, 1866, 2085, 2224, 2488, 2780, 3110, 3336, 3732, 4170, 4448, 4665, 4976, 5560, 6220, 6672, 7464, 8340, 9330, 9952, 11120, 12440, 13344, 14928, 16680, 18660, 22240, 24880, 29856, 33360, 37320, 43229, 49760, 66720, 74640, 86458, 129687, 149280, 172916, 216145, 259374, 345832, 432290, 518748, 648435, 691664, 864580, 1037496, 1296870, 1383328, 1729160, 2074992, 2593740, 3458320, 4149984, 5187480, 6916640, 10374960, 20749920]

約数ペア:

[(1, 20749920), (2, 10374960), (3, 6916640), (4, 5187480), (5, 4149984), (6, 3458320), (8, 2593740), (10, 2074992), (12, 1729160), (15, 1383328), (16, 1296870), (20, 1037496), (24, 864580), (30, 691664), (32, 648435), (40, 518748), (48, 432290), (60, 345832), (80, 259374), (96, 216145), (120, 172916), (139, 149280), (160, 129687), (240, 86458), (278, 74640), (311, 66720), (417, 49760), (480, 43229), (556, 37320), (622, 33360), (695, 29856), (834, 24880), (933, 22240), (1112, 18660), (1244, 16680), (1390, 14928), (1555, 13344), (1668, 12440), (1866, 11120), (2085, 9952), (2224, 9330), (2488, 8340), (2780, 7464), (3110, 6672), (3336, 6220), (3732, 5560), (4170, 4976), (4448, 4665)]