640384500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{859}}^1$

素因数の和:959

約数の個数: 192

約数和(自身を含む): 2163732480

約数和(自身を除く): 1523347980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 71, 75, 84, 100, 105, 125, 140, 142, 150, 175, 210, 213, 250, 284, 300, 350, 355, 375, 420, 426, 497, 500, 525, 700, 710, 750, 852, 859, 875, 994, 1050, 1065, 1420, 1491, 1500, 1718, 1750, 1775, 1988, 2100, 2130, 2485, 2577, 2625, 2982, 3436, 3500, 3550, 4260, 4295, 4970, 5154, 5250, 5325, 5964, 6013, 7100, 7455, 8590, 8875, 9940, 10308, 10500, 10650, 12026, 12425, 12885, 14910, 17180, 17750, 18039, 21300, 21475, 24052, 24850, 25770, 26625, 29820, 30065, 35500, 36078, 37275, 42950, 49700, 51540, 53250, 60130, 60989, 62125, 64425, 72156, 74550, 85900, 90195, 106500, 107375, 120260, 121978, 124250, 128850, 149100, 150325, 180390, 182967, 186375, 214750, 243956, 248500, 257700, 300650, 304945, 322125, 360780, 365934, 372750, 426923, 429500, 450975, 601300, 609890, 644250, 731868, 745500, 751625, 853846, 901950, 914835, 1219780, 1280769, 1288500, 1503250, 1524725, 1707692, 1803900, 1829670, 2134615, 2254875, 2561538, 3006500, 3049450, 3659340, 4269230, 4509750, 4574175, 5123076, 6098900, 6403845, 7623625, 8538460, 9019500, 9148350, 10673075, 12807690, 15247250, 18296700, 21346150, 22870875, 25615380, 30494500, 32019225, 42692300, 45741750, 53365375, 64038450, 91483500, 106730750, 128076900, 160096125, 213461500, 320192250, 640384500]

約数ペア:

[(1, 640384500), (2, 320192250), (3, 213461500), (4, 160096125), (5, 128076900), (6, 106730750), (7, 91483500), (10, 64038450), (12, 53365375), (14, 45741750), (15, 42692300), (20, 32019225), (21, 30494500), (25, 25615380), (28, 22870875), (30, 21346150), (35, 18296700), (42, 15247250), (50, 12807690), (60, 10673075), (70, 9148350), (71, 9019500), (75, 8538460), (84, 7623625), (100, 6403845), (105, 6098900), (125, 5123076), (140, 4574175), (142, 4509750), (150, 4269230), (175, 3659340), (210, 3049450), (213, 3006500), (250, 2561538), (284, 2254875), (300, 2134615), (350, 1829670), (355, 1803900), (375, 1707692), (420, 1524725), (426, 1503250), (497, 1288500), (500, 1280769), (525, 1219780), (700, 914835), (710, 901950), (750, 853846), (852, 751625), (859, 745500), (875, 731868), (994, 644250), (1050, 609890), (1065, 601300), (1420, 450975), (1491, 429500), (1500, 426923), (1718, 372750), (1750, 365934), (1775, 360780), (1988, 322125), (2100, 304945), (2130, 300650), (2485, 257700), (2577, 248500), (2625, 243956), (2982, 214750), (3436, 186375), (3500, 182967), (3550, 180390), (4260, 150325), (4295, 149100), (4970, 128850), (5154, 124250), (5250, 121978), (5325, 120260), (5964, 107375), (6013, 106500), (7100, 90195), (7455, 85900), (8590, 74550), (8875, 72156), (9940, 64425), (10308, 62125), (10500, 60989), (10650, 60130), (12026, 53250), (12425, 51540), (12885, 49700), (14910, 42950), (17180, 37275), (17750, 36078), (18039, 35500), (21300, 30065), (21475, 29820), (24052, 26625), (24850, 25770)]