81352216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21499}}^1$

素因数の和:21559

約数の個数: 32

約数和(自身を含む): 170280000

約数和(自身を除く): 88927784

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 172, 344, 473, 946, 1892, 3784, 21499, 42998, 85996, 171992, 236489, 472978, 924457, 945956, 1848914, 1891912, 3697828, 7395656, 10169027, 20338054, 40676108, 81352216]

約数ペア:

[(1, 81352216), (2, 40676108), (4, 20338054), (8, 10169027), (11, 7395656), (22, 3697828), (43, 1891912), (44, 1848914), (86, 945956), (88, 924457), (172, 472978), (344, 236489), (473, 171992), (946, 85996), (1892, 42998), (3784, 21499)]