19786888

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{20441}}^1$

素因数の和:20469

約数の個数: 24

約数和(自身を含む): 40781790

約数和(自身を除く): 20994902

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 20441, 40882, 81764, 163528, 224851, 449702, 899404, 1798808, 2473361, 4946722, 9893444, 19786888]

約数ペア:

[(1, 19786888), (2, 9893444), (4, 4946722), (8, 2473361), (11, 1798808), (22, 899404), (44, 449702), (88, 224851), (121, 163528), (242, 81764), (484, 40882), (968, 20441)]