import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int p = sc.nextInt();
        int q = sc.nextInt();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < q; i++) {
            int left = sc.nextInt();
            int right = sc.nextInt();
            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);
    }
}