Question

Let f(x) = 2xⁿ + λ, λ ∈ R, n ∈ N and f(4) = 133, f(5) = 255. Then the sum of all the positive integer divisors of (f(3) – f(2)) is

(1) 61

(2) 60

(3) 58

(4) 59

Answer 1

Correct option is (2) 60

Number of Divisors is 1, 2, 19, 38 ; & their sum is 60