Let $f\left(x\right)=2x^n+\lambda ,\lambda \in \mathrm{ℝ},\mathrm{n}\in \mathrm{\mathbb{N}}$, and $f\left(4\right)=133$, $f\left(5\right)=255$. Then the sum of all the positive integer divisors of $\left(f\right(3)-f(2\left)\right)$ is