In this 615D - Множители after analyzing some cases, I saw that,

If a number n = p1^a * p2^b * p3^c.

Then for the answer the contribution of each prime is something like -

Let that , calculating the contribution of p1 --->

x = (a * (a+1) )/2;
y = (b+1)*(c+1) [ That is , how many divisors are there without the prime p1]

z = x*y
so the contribution of p1 is  p1^z

To calculate y , I had to use two loops. And got TLE[submission:https://mirror.codeforces.com/contest/615/submission/86303876]. How to optimize this portion?