Question

Let $N=1550$, then the number of ways in which $N$ can be resolved as product of two numbers is

Answer 1

$1550=2\cdot 5^2\cdot 31$
Since, $N$ is not a perfect square, the number of ways in which $N$ can be resolved as product of two numbers $=\frac{1}{2}\left[\right(1+1\left)\right(2+1\left)\right(1+1\left)\right]=6$