20450687488

素因数分解:

$2^9\times 7^1\times {\mathrm{11}}^1\times {\mathrm{518737}}^1$

素因数の和:518773

約数の個数: 80

約数和(自身を含む): 50944221504

約数和(自身を除く): 30493534016

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 256, 308, 352, 448, 512, 616, 704, 896, 1232, 1408, 1792, 2464, 2816, 3584, 4928, 5632, 9856, 19712, 39424, 518737, 1037474, 2074948, 3631159, 4149896, 5706107, 7262318, 8299792, 11412214, 14524636, 16599584, 22824428, 29049272, 33199168, 39942749, 45648856, 58098544, 66398336, 79885498, 91297712, 116197088, 132796672, 159770996, 182595424, 232394176, 265593344, 319541992, 365190848, 464788352, 639083984, 730381696, 929576704, 1278167968, 1460763392, 1859153408, 2556335936, 2921526784, 5112671872, 10225343744, 20450687488]

約数ペア:

[(1, 20450687488), (2, 10225343744), (4, 5112671872), (7, 2921526784), (8, 2556335936), (11, 1859153408), (14, 1460763392), (16, 1278167968), (22, 929576704), (28, 730381696), (32, 639083984), (44, 464788352), (56, 365190848), (64, 319541992), (77, 265593344), (88, 232394176), (112, 182595424), (128, 159770996), (154, 132796672), (176, 116197088), (224, 91297712), (256, 79885498), (308, 66398336), (352, 58098544), (448, 45648856), (512, 39942749), (616, 33199168), (704, 29049272), (896, 22824428), (1232, 16599584), (1408, 14524636), (1792, 11412214), (2464, 8299792), (2816, 7262318), (3584, 5706107), (4928, 4149896), (5632, 3631159), (9856, 2074948), (19712, 1037474), (39424, 518737)]