Removing correlation between independent variables
can we remove this correlation by multiplying or dividing the values
of one of the variables with random factors (E.g., multiplying the
first value with 2, the second value with 3, etc.)

No you can not decorrelate 2 variables by multiplying or dividing them by a random factors, you can use one of the following methods instead if you want to keep the 2 variables:

Divide a and b: new_a = a / b
Powering up a: new_a = a^2, a^3, ...
PCA
...