257008640

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 176

約数和(自身を含む): 721592064

約数和(自身を除く): 464583424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 101, 112, 128, 140, 142, 160, 202, 224, 256, 280, 284, 320, 355, 404, 448, 497, 505, 512, 560, 568, 640, 707, 710, 808, 896, 994, 1010, 1024, 1120, 1136, 1280, 1414, 1420, 1616, 1792, 1988, 2020, 2240, 2272, 2485, 2560, 2828, 2840, 3232, 3535, 3584, 3976, 4040, 4480, 4544, 4970, 5120, 5656, 5680, 6464, 7070, 7168, 7171, 7952, 8080, 8960, 9088, 9940, 11312, 11360, 12928, 14140, 14342, 15904, 16160, 17920, 18176, 19880, 22624, 22720, 25856, 28280, 28684, 31808, 32320, 35840, 35855, 36352, 39760, 45248, 45440, 50197, 51712, 56560, 57368, 63616, 64640, 71710, 72704, 79520, 90496, 90880, 100394, 103424, 113120, 114736, 127232, 129280, 143420, 159040, 180992, 181760, 200788, 226240, 229472, 250985, 254464, 258560, 286840, 318080, 361984, 363520, 401576, 452480, 458944, 501970, 508928, 517120, 573680, 636160, 723968, 803152, 904960, 917888, 1003940, 1147360, 1272320, 1606304, 1809920, 1835776, 2007880, 2294720, 2544640, 3212608, 3619840, 3671552, 4015760, 4589440, 6425216, 7343104, 8031520, 9178880, 12850432, 16063040, 18357760, 25700864, 32126080, 36715520, 51401728, 64252160, 128504320, 257008640]

約数ペア:

[(1, 257008640), (2, 128504320), (4, 64252160), (5, 51401728), (7, 36715520), (8, 32126080), (10, 25700864), (14, 18357760), (16, 16063040), (20, 12850432), (28, 9178880), (32, 8031520), (35, 7343104), (40, 6425216), (56, 4589440), (64, 4015760), (70, 3671552), (71, 3619840), (80, 3212608), (101, 2544640), (112, 2294720), (128, 2007880), (140, 1835776), (142, 1809920), (160, 1606304), (202, 1272320), (224, 1147360), (256, 1003940), (280, 917888), (284, 904960), (320, 803152), (355, 723968), (404, 636160), (448, 573680), (497, 517120), (505, 508928), (512, 501970), (560, 458944), (568, 452480), (640, 401576), (707, 363520), (710, 361984), (808, 318080), (896, 286840), (994, 258560), (1010, 254464), (1024, 250985), (1120, 229472), (1136, 226240), (1280, 200788), (1414, 181760), (1420, 180992), (1616, 159040), (1792, 143420), (1988, 129280), (2020, 127232), (2240, 114736), (2272, 113120), (2485, 103424), (2560, 100394), (2828, 90880), (2840, 90496), (3232, 79520), (3535, 72704), (3584, 71710), (3976, 64640), (4040, 63616), (4480, 57368), (4544, 56560), (4970, 51712), (5120, 50197), (5656, 45440), (5680, 45248), (6464, 39760), (7070, 36352), (7168, 35855), (7171, 35840), (7952, 32320), (8080, 31808), (8960, 28684), (9088, 28280), (9940, 25856), (11312, 22720), (11360, 22624), (12928, 19880), (14140, 18176), (14342, 17920), (15904, 16160)]