1278401280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25609}}^1$

素因数の和:25646

約数の個数: 144

約数和(自身を含む): 4397134560

約数和(自身を除く): 3118733280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 768, 780, 832, 960, 1040, 1248, 1280, 1560, 1664, 1920, 2080, 2496, 3120, 3328, 3840, 4160, 4992, 6240, 8320, 9984, 12480, 16640, 24960, 25609, 49920, 51218, 76827, 102436, 128045, 153654, 204872, 256090, 307308, 332917, 384135, 409744, 512180, 614616, 665834, 768270, 819488, 998751, 1024360, 1229232, 1331668, 1536540, 1638976, 1664585, 1997502, 2048720, 2458464, 2663336, 3073080, 3277952, 3329170, 3995004, 4097440, 4916928, 4993755, 5326672, 6146160, 6555904, 6658340, 7990008, 8194880, 9833856, 9987510, 10653344, 12292320, 13316680, 15980016, 16389760, 19667712, 19975020, 21306688, 24584640, 26633360, 31960032, 32779520, 39950040, 42613376, 49169280, 53266720, 63920064, 79900080, 85226752, 98338560, 106533440, 127840128, 159800160, 213066880, 255680256, 319600320, 426133760, 639200640, 1278401280]

約数ペア:

[(1, 1278401280), (2, 639200640), (3, 426133760), (4, 319600320), (5, 255680256), (6, 213066880), (8, 159800160), (10, 127840128), (12, 106533440), (13, 98338560), (15, 85226752), (16, 79900080), (20, 63920064), (24, 53266720), (26, 49169280), (30, 42613376), (32, 39950040), (39, 32779520), (40, 31960032), (48, 26633360), (52, 24584640), (60, 21306688), (64, 19975020), (65, 19667712), (78, 16389760), (80, 15980016), (96, 13316680), (104, 12292320), (120, 10653344), (128, 9987510), (130, 9833856), (156, 8194880), (160, 7990008), (192, 6658340), (195, 6555904), (208, 6146160), (240, 5326672), (256, 4993755), (260, 4916928), (312, 4097440), (320, 3995004), (384, 3329170), (390, 3277952), (416, 3073080), (480, 2663336), (520, 2458464), (624, 2048720), (640, 1997502), (768, 1664585), (780, 1638976), (832, 1536540), (960, 1331668), (1040, 1229232), (1248, 1024360), (1280, 998751), (1560, 819488), (1664, 768270), (1920, 665834), (2080, 614616), (2496, 512180), (3120, 409744), (3328, 384135), (3840, 332917), (4160, 307308), (4992, 256090), (6240, 204872), (8320, 153654), (9984, 128045), (12480, 102436), (16640, 76827), (24960, 51218), (25609, 49920)]