8391640

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1087}}^1$

素因数の和:1291

約数の個数: 32

約数和(自身を含む): 18996480

約数和(自身を除く): 10604840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1087, 1544, 1930, 2174, 3860, 4348, 5435, 7720, 8696, 10870, 21740, 43480, 209791, 419582, 839164, 1048955, 1678328, 2097910, 4195820, 8391640]

約数ペア:

[(1, 8391640), (2, 4195820), (4, 2097910), (5, 1678328), (8, 1048955), (10, 839164), (20, 419582), (40, 209791), (193, 43480), (386, 21740), (772, 10870), (965, 8696), (1087, 7720), (1544, 5435), (1930, 4348), (2174, 3860)]