51310280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 139968000

約数和(自身を除く): 88657720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 71, 89, 116, 140, 142, 145, 178, 203, 232, 280, 284, 290, 355, 356, 406, 445, 497, 568, 580, 623, 710, 712, 812, 890, 994, 1015, 1160, 1246, 1420, 1624, 1780, 1988, 2030, 2059, 2485, 2492, 2581, 2840, 3115, 3560, 3976, 4060, 4118, 4970, 4984, 5162, 6230, 6319, 8120, 8236, 9940, 10295, 10324, 12460, 12638, 12905, 14413, 16472, 18067, 19880, 20590, 20648, 24920, 25276, 25810, 28826, 31595, 36134, 41180, 44233, 50552, 51620, 57652, 63190, 72065, 72268, 82360, 88466, 90335, 103240, 115304, 126380, 144130, 144536, 176932, 180670, 183251, 221165, 252760, 288260, 353864, 361340, 366502, 442330, 576520, 722680, 733004, 884660, 916255, 1282757, 1466008, 1769320, 1832510, 2565514, 3665020, 5131028, 6413785, 7330040, 10262056, 12827570, 25655140, 51310280]

約数ペア:

[(1, 51310280), (2, 25655140), (4, 12827570), (5, 10262056), (7, 7330040), (8, 6413785), (10, 5131028), (14, 3665020), (20, 2565514), (28, 1832510), (29, 1769320), (35, 1466008), (40, 1282757), (56, 916255), (58, 884660), (70, 733004), (71, 722680), (89, 576520), (116, 442330), (140, 366502), (142, 361340), (145, 353864), (178, 288260), (203, 252760), (232, 221165), (280, 183251), (284, 180670), (290, 176932), (355, 144536), (356, 144130), (406, 126380), (445, 115304), (497, 103240), (568, 90335), (580, 88466), (623, 82360), (710, 72268), (712, 72065), (812, 63190), (890, 57652), (994, 51620), (1015, 50552), (1160, 44233), (1246, 41180), (1420, 36134), (1624, 31595), (1780, 28826), (1988, 25810), (2030, 25276), (2059, 24920), (2485, 20648), (2492, 20590), (2581, 19880), (2840, 18067), (3115, 16472), (3560, 14413), (3976, 12905), (4060, 12638), (4118, 12460), (4970, 10324), (4984, 10295), (5162, 9940), (6230, 8236), (6319, 8120)]