Find the total number of factors of `2160` (excluding `1`)

Find the total number of factors of 24.

Find the total number of factors of 576.

Find the total number of factors of 540.

Find the total number of odd factors of 72

Find the total no of factors of 60 ?

If m has the prime factor decomposition P_1^(r_1),P_2^(r_2)…….P_n^(r_n) ,what is the total number of factors of m(excluding 1)?