Factoring factors!

First, you have to factorize 84000, then you will get $2^{5} .3.5^{3} .7$ From those numbers, you can calculate the number of 84000's factor like this: $(5+1)\times(1+1)\times(3+1)\times(1+1) = 96$ They added by 1 because $n^{0} =1$ and 1 is also the factor.

Even number is all numbers that are multiples of 2. So you have to include 2 at least 1.

$(5)\times(1+1)\times(3+1)\times(1+1) = 80.$