Depending on the value of 'x', the numerical value of that expression
could have almost anything for factors.
For example, if [ x=512 ] then 1/2x = 256, and the factors of 1/2x are
1, 2, 4, 8, 16, 32, 64, 128, and 256 .
But the only factors you can always be sure of, that don't depend on the
value of 'x', are
1, 1/2, x, and 1/2x .
