20993280

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:113

約数の個数: 288

約数和(自身を含む): 84768768

約数和(自身を除く): 63775488

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 32, 33, 35, 40, 42, 44, 48, 55, 56, 60, 64, 66, 70, 71, 77, 80, 84, 88, 96, 105, 110, 112, 120, 128, 132, 140, 142, 154, 160, 165, 168, 176, 192, 210, 213, 220, 224, 231, 240, 256, 264, 280, 284, 308, 320, 330, 336, 352, 355, 384, 385, 420, 426, 440, 448, 462, 480, 497, 528, 560, 568, 616, 640, 660, 672, 704, 710, 768, 770, 781, 840, 852, 880, 896, 924, 960, 994, 1056, 1065, 1120, 1136, 1155, 1232, 1280, 1320, 1344, 1408, 1420, 1491, 1540, 1562, 1680, 1704, 1760, 1792, 1848, 1920, 1988, 2112, 2130, 2240, 2272, 2310, 2343, 2464, 2485, 2640, 2688, 2816, 2840, 2982, 3080, 3124, 3360, 3408, 3520, 3696, 3840, 3905, 3976, 4224, 4260, 4480, 4544, 4620, 4686, 4928, 4970, 5280, 5376, 5467, 5680, 5964, 6160, 6248, 6720, 6816, 7040, 7392, 7455, 7810, 7952, 8448, 8520, 8960, 9088, 9240, 9372, 9856, 9940, 10560, 10934, 11360, 11715, 11928, 12320, 12496, 13440, 13632, 14080, 14784, 14910, 15620, 15904, 16401, 17040, 18176, 18480, 18744, 19712, 19880, 21120, 21868, 22720, 23430, 23856, 24640, 24992, 26880, 27264, 27335, 29568, 29820, 31240, 31808, 32802, 34080, 36960, 37488, 39760, 42240, 43736, 45440, 46860, 47712, 49280, 49984, 54528, 54670, 59136, 59640, 62480, 63616, 65604, 68160, 73920, 74976, 79520, 82005, 87472, 90880, 93720, 95424, 98560, 99968, 109340, 119280, 124960, 127232, 131208, 136320, 147840, 149952, 159040, 164010, 174944, 187440, 190848, 199936, 218680, 238560, 249920, 262416, 272640, 295680, 299904, 318080, 328020, 349888, 374880, 381696, 437360, 477120, 499840, 524832, 599808, 636160, 656040, 699776, 749760, 874720, 954240, 999680, 1049664, 1312080, 1399552, 1499520, 1749440, 1908480, 2099328, 2624160, 2999040, 3498880, 4198656, 5248320, 6997760, 10496640, 20993280]

約数ペア:

[(1, 20993280), (2, 10496640), (3, 6997760), (4, 5248320), (5, 4198656), (6, 3498880), (7, 2999040), (8, 2624160), (10, 2099328), (11, 1908480), (12, 1749440), (14, 1499520), (15, 1399552), (16, 1312080), (20, 1049664), (21, 999680), (22, 954240), (24, 874720), (28, 749760), (30, 699776), (32, 656040), (33, 636160), (35, 599808), (40, 524832), (42, 499840), (44, 477120), (48, 437360), (55, 381696), (56, 374880), (60, 349888), (64, 328020), (66, 318080), (70, 299904), (71, 295680), (77, 272640), (80, 262416), (84, 249920), (88, 238560), (96, 218680), (105, 199936), (110, 190848), (112, 187440), (120, 174944), (128, 164010), (132, 159040), (140, 149952), (142, 147840), (154, 136320), (160, 131208), (165, 127232), (168, 124960), (176, 119280), (192, 109340), (210, 99968), (213, 98560), (220, 95424), (224, 93720), (231, 90880), (240, 87472), (256, 82005), (264, 79520), (280, 74976), (284, 73920), (308, 68160), (320, 65604), (330, 63616), (336, 62480), (352, 59640), (355, 59136), (384, 54670), (385, 54528), (420, 49984), (426, 49280), (440, 47712), (448, 46860), (462, 45440), (480, 43736), (497, 42240), (528, 39760), (560, 37488), (568, 36960), (616, 34080), (640, 32802), (660, 31808), (672, 31240), (704, 29820), (710, 29568), (768, 27335), (770, 27264), (781, 26880), (840, 24992), (852, 24640), (880, 23856), (896, 23430), (924, 22720), (960, 21868), (994, 21120), (1056, 19880), (1065, 19712), (1120, 18744), (1136, 18480), (1155, 18176), (1232, 17040), (1280, 16401), (1320, 15904), (1344, 15620), (1408, 14910), (1420, 14784), (1491, 14080), (1540, 13632), (1562, 13440), (1680, 12496), (1704, 12320), (1760, 11928), (1792, 11715), (1848, 11360), (1920, 10934), (1988, 10560), (2112, 9940), (2130, 9856), (2240, 9372), (2272, 9240), (2310, 9088), (2343, 8960), (2464, 8520), (2485, 8448), (2640, 7952), (2688, 7810), (2816, 7455), (2840, 7392), (2982, 7040), (3080, 6816), (3124, 6720), (3360, 6248), (3408, 6160), (3520, 5964), (3696, 5680), (3840, 5467), (3905, 5376), (3976, 5280), (4224, 4970), (4260, 4928), (4480, 4686), (4544, 4620)]