#include <bits/stdc++.h>
using namespace std;

signed main() {
  ios::sync_with_stdio(false);

  int P, Q;
  cin >> P >> Q;

  map<int, int64_t> dp;
  dp[0] = 0;
  function<int64_t(int)> solve = [&](int u) {
    if (dp.count(u)) return dp[u];
    int k = P / u;
    int l = P / (k + 1);
    return dp[u] = solve(l) + 1LL * (P % u + P % (l + 1)) * (u - l) / 2;
  };

  for (int i = 0; i < Q; ++i) {
    int L, R;
    cin >> L >> R;
    cout << solve(R) - solve(L - 1) << endl;
  }

  return 0;
}