using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var p = PList(n);
        var ans = 0L;
        for (var i = 0; i < p.Count; ++i)
        {
            var rp = p[p.Count - i - 1];
            var sub = 1L;
            for (var b = 0; b < 30; ++b)
            {
                var xor = (p[i] >> b) & 1;
                var or = (rp >> b) & 1;
                if (xor == 1 && or == 1) sub <<= 1;
                else if (xor == 1 && or == 0) sub = 0;
            }
            sub >>= 1;
            ans += sub;
        }
        WriteLine(ans);
    }
    static List<int> PList(int n)
    {
        var ans = new List<int>();
        var rev = new List<int>();
        for (var i = 1; i * i <= n; ++i)
        {
            if (n % i == 0)
            {
                ans.Add(i);
                if (i * i < n) rev.Add(n / i);
            }
        }
        rev.Reverse();
        ans.AddRange(rev);
        return ans;
    }
}