281481984

素因数分解:

$2^8\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:623

約数の個数: 216

約数和(自身を含む): 959142912

約数和(自身を除く): 677660928

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 31, 32, 36, 42, 48, 56, 62, 63, 64, 72, 84, 93, 96, 112, 124, 126, 128, 144, 168, 186, 192, 217, 224, 248, 252, 256, 279, 288, 336, 372, 384, 434, 448, 496, 504, 558, 563, 576, 651, 672, 744, 768, 868, 896, 992, 1008, 1116, 1126, 1152, 1302, 1344, 1488, 1689, 1736, 1792, 1953, 1984, 2016, 2232, 2252, 2304, 2604, 2688, 2976, 3378, 3472, 3906, 3941, 3968, 4032, 4464, 4504, 5067, 5208, 5376, 5952, 6756, 6944, 7812, 7882, 7936, 8064, 8928, 9008, 10134, 10416, 11823, 11904, 13512, 13888, 15624, 15764, 16128, 17453, 17856, 18016, 20268, 20832, 23646, 23808, 27024, 27776, 31248, 31528, 34906, 35469, 35712, 36032, 40536, 41664, 47292, 52359, 54048, 55552, 62496, 63056, 69812, 70938, 71424, 72064, 81072, 83328, 94584, 104718, 108096, 122171, 124992, 126112, 139624, 141876, 144128, 157077, 162144, 166656, 189168, 209436, 216192, 244342, 249984, 252224, 279248, 283752, 314154, 324288, 366513, 378336, 418872, 432384, 488684, 499968, 504448, 558496, 567504, 628308, 648576, 733026, 756672, 837744, 977368, 1008896, 1099539, 1116992, 1135008, 1256616, 1297152, 1466052, 1513344, 1675488, 1954736, 2199078, 2233984, 2270016, 2513232, 2932104, 3026688, 3350976, 3909472, 4398156, 4467968, 4540032, 5026464, 5864208, 6701952, 7818944, 8796312, 9080064, 10052928, 11728416, 13403904, 15637888, 17592624, 20105856, 23456832, 31275776, 35185248, 40211712, 46913664, 70370496, 93827328, 140740992, 281481984]

約数ペア:

[(1, 281481984), (2, 140740992), (3, 93827328), (4, 70370496), (6, 46913664), (7, 40211712), (8, 35185248), (9, 31275776), (12, 23456832), (14, 20105856), (16, 17592624), (18, 15637888), (21, 13403904), (24, 11728416), (28, 10052928), (31, 9080064), (32, 8796312), (36, 7818944), (42, 6701952), (48, 5864208), (56, 5026464), (62, 4540032), (63, 4467968), (64, 4398156), (72, 3909472), (84, 3350976), (93, 3026688), (96, 2932104), (112, 2513232), (124, 2270016), (126, 2233984), (128, 2199078), (144, 1954736), (168, 1675488), (186, 1513344), (192, 1466052), (217, 1297152), (224, 1256616), (248, 1135008), (252, 1116992), (256, 1099539), (279, 1008896), (288, 977368), (336, 837744), (372, 756672), (384, 733026), (434, 648576), (448, 628308), (496, 567504), (504, 558496), (558, 504448), (563, 499968), (576, 488684), (651, 432384), (672, 418872), (744, 378336), (768, 366513), (868, 324288), (896, 314154), (992, 283752), (1008, 279248), (1116, 252224), (1126, 249984), (1152, 244342), (1302, 216192), (1344, 209436), (1488, 189168), (1689, 166656), (1736, 162144), (1792, 157077), (1953, 144128), (1984, 141876), (2016, 139624), (2232, 126112), (2252, 124992), (2304, 122171), (2604, 108096), (2688, 104718), (2976, 94584), (3378, 83328), (3472, 81072), (3906, 72064), (3941, 71424), (3968, 70938), (4032, 69812), (4464, 63056), (4504, 62496), (5067, 55552), (5208, 54048), (5376, 52359), (5952, 47292), (6756, 41664), (6944, 40536), (7812, 36032), (7882, 35712), (7936, 35469), (8064, 34906), (8928, 31528), (9008, 31248), (10134, 27776), (10416, 27024), (11823, 23808), (11904, 23646), (13512, 20832), (13888, 20268), (15624, 18016), (15764, 17856), (16128, 17453)]