import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.NoSuchElementException;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner();
		long P = sc.nextLong();
		int Q = sc.nextInt();
		int[] L = new int[Q];
		int[] R = new int[Q];
		for (int i = 0; i < Q; ++i) {
			L[i] = sc.nextInt();
			R[i] = sc.nextInt();
		}
		PrintWriter pw = new PrintWriter(System.out);
		long[] sum = new long[20000000];
		for (int i = 1; i < sum.length; ++i) {
			sum[i] = P % i + (i > 0 ? sum[i - 1] : 0);
		}
		for (int i = 0; i < Q; ++i) {
			int l = L[i];
			int r = R[i];
			long ans = 0;
			if (l < sum.length) {
				ans = sum[Math.min(sum.length - 1, r)] - sum[l - 1];
				l = Math.min(sum.length, r + 1);
			}
			if (l > r) {
				pw.println(ans);
			} else {
				long q = P / l;
				for (long cur = l; cur <= r;) {
					long res = P % cur;
					long x = q == 0 ? r - cur : Math.min((long) ((P - cur * q) / q), r - cur);
					// l,l+1,..,l+xが商が同じ
					ans = res * (x + 1) - q * x * (x + 1) / 2 + ans;
					cur = cur + x + 1;
					--q;
				}
				pw.println(ans);
			}
		}
		pw.close();
	}

	static long gcd(long a, long b) {
		if (a > b)
			return gcd(b, a);
		if (a == 0)
			return b;
		return gcd(b % a, a);
	}

	static class Scanner {
		private final InputStream in = System.in;
		private final byte[] buffer = new byte[1024];
		private int ptr = 0;
		private int buflen = 0;

		private boolean hasNextByte() {
			if (ptr < buflen) {
				return true;
			} else {
				ptr = 0;
				try {
					buflen = in.read(buffer);
				} catch (IOException e) {
					e.printStackTrace();
				}
				if (buflen <= 0) {
					return false;
				}
			}
			return true;
		}

		private int readByte() {
			if (hasNextByte())
				return buffer[ptr++];
			else
				return -1;
		}

		private boolean isPrintableChar(int c) {
			return 33 <= c && c <= 126;
		}

		private void skipUnprintable() {
			while (hasNextByte() && !isPrintableChar(buffer[ptr]))
				ptr++;
		}

		public boolean hasNext() {
			skipUnprintable();
			return hasNextByte();
		}

		public String next() {
			if (!hasNext())
				throw new NoSuchElementException();
			StringBuilder sb = new StringBuilder();
			int b = readByte();
			while (isPrintableChar(b)) {
				sb.appendCodePoint(b);
				b = readByte();
			}
			return sb.toString();
		}

		public long nextLong() {
			if (!hasNext())
				throw new NoSuchElementException();
			long n = 0;
			boolean minus = false;
			int b = readByte();
			if (b == '-') {
				minus = true;
				b = readByte();
			}
			if (b < '0' || '9' < b) {
				throw new NumberFormatException();
			}
			while (true) {
				if ('0' <= b && b <= '9') {
					n *= 10;
					n += b - '0';
				} else if (b == -1 || !isPrintableChar(b)) {
					return minus ? -n : n;
				} else {
					throw new NumberFormatException();
				}
				b = readByte();
			}
		}

		public int nextInt() {
			return (int) nextLong();
		}
	}

	public static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}
}