import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] first = br.readLine().split(" ", 2);
        int p = Integer.parseInt(first[0]);
        int q = Integer.parseInt(first[1]);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < q; i++) {
            String[] line = br.readLine().split(" ", 2);
            int left = Integer.parseInt(line[0]);
            int right = Integer.parseInt(line[1]);
            long start = left;
            long total = (right - left + 1) * (long) p;
            while (start <= right) {
                long div = p / start;
                if (div == 0) {
                    break;
                }
                long end = Math.min(p / div, right);
                total -= (end - start + 1) * (end + start) / 2 * div;
                start = end + 1;
            }
            sb.append(total).append("\n");
        }
        System.out.print(sb);
    }
}