257581440

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:449

約数の個数: 192

約数和(自身を含む): 897914160

約数和(自身を除く): 640332720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 197, 227, 240, 288, 320, 360, 384, 394, 454, 480, 576, 591, 640, 681, 720, 788, 908, 960, 985, 1135, 1152, 1182, 1362, 1440, 1576, 1773, 1816, 1920, 1970, 2043, 2270, 2364, 2724, 2880, 2955, 3152, 3405, 3546, 3632, 3940, 4086, 4540, 4728, 5448, 5760, 5910, 6304, 6810, 7092, 7264, 7880, 8172, 8865, 9080, 9456, 10215, 10896, 11820, 12608, 13620, 14184, 14528, 15760, 16344, 17730, 18160, 18912, 20430, 21792, 23640, 25216, 27240, 28368, 29056, 31520, 32688, 35460, 36320, 37824, 40860, 43584, 44719, 47280, 54480, 56736, 63040, 65376, 70920, 72640, 75648, 81720, 87168, 89438, 94560, 108960, 113472, 126080, 130752, 134157, 141840, 145280, 163440, 178876, 189120, 217920, 223595, 226944, 261504, 268314, 283680, 326880, 357752, 378240, 402471, 435840, 447190, 536628, 567360, 653760, 670785, 715504, 804942, 894380, 1073256, 1134720, 1307520, 1341570, 1431008, 1609884, 1788760, 2012355, 2146512, 2683140, 2862016, 3219768, 3577520, 4024710, 4293024, 5366280, 5724032, 6439536, 7155040, 8049420, 8586048, 10732560, 12879072, 14310080, 16098840, 17172096, 21465120, 25758144, 28620160, 32197680, 42930240, 51516288, 64395360, 85860480, 128790720, 257581440]

約数ペア:

[(1, 257581440), (2, 128790720), (3, 85860480), (4, 64395360), (5, 51516288), (6, 42930240), (8, 32197680), (9, 28620160), (10, 25758144), (12, 21465120), (15, 17172096), (16, 16098840), (18, 14310080), (20, 12879072), (24, 10732560), (30, 8586048), (32, 8049420), (36, 7155040), (40, 6439536), (45, 5724032), (48, 5366280), (60, 4293024), (64, 4024710), (72, 3577520), (80, 3219768), (90, 2862016), (96, 2683140), (120, 2146512), (128, 2012355), (144, 1788760), (160, 1609884), (180, 1431008), (192, 1341570), (197, 1307520), (227, 1134720), (240, 1073256), (288, 894380), (320, 804942), (360, 715504), (384, 670785), (394, 653760), (454, 567360), (480, 536628), (576, 447190), (591, 435840), (640, 402471), (681, 378240), (720, 357752), (788, 326880), (908, 283680), (960, 268314), (985, 261504), (1135, 226944), (1152, 223595), (1182, 217920), (1362, 189120), (1440, 178876), (1576, 163440), (1773, 145280), (1816, 141840), (1920, 134157), (1970, 130752), (2043, 126080), (2270, 113472), (2364, 108960), (2724, 94560), (2880, 89438), (2955, 87168), (3152, 81720), (3405, 75648), (3546, 72640), (3632, 70920), (3940, 65376), (4086, 63040), (4540, 56736), (4728, 54480), (5448, 47280), (5760, 44719), (5910, 43584), (6304, 40860), (6810, 37824), (7092, 36320), (7264, 35460), (7880, 32688), (8172, 31520), (8865, 29056), (9080, 28368), (9456, 27240), (10215, 25216), (10896, 23640), (11820, 21792), (12608, 20430), (13620, 18912), (14184, 18160), (14528, 17730), (15760, 16344)]