solve in python $3$

We all know about divisor, dividend, quotient and remainder of a number,

Now, you are given an integer N and A and an equation NAM $+$ D$,$ where you can choose a positive integer M$,$ multiply it with A and add a divisor of M to make it equal to N$.$

Now, for a given value of N and A$,$ can you find the sum of the number of possible values of M that satisfy the given equation?

Input Format

The first line contains two integers, N and A

Output Format

A single integer representing the sum of the number of possible values of M which satisfies the given equation.