Azerbaijan Programming Olympiad - 2nd Stage preparation
Sigma-function on a segment
where σ(i) is the sum of positive divisors of number i.
Contains no more than
105 queries. Each query is given on a separate line and contains two numbers l and r (1 ≤ l ≤ r ≤ 5 *
For each query print on a separate line one number S(l, r).
Input example #1
Output example #1