#include <fstream>

using namespace std;

ifstream fin("zero2.in");
ofstream fout("zero2.out");

const long long INF = 1LL << 62;

int fp[15], ex[15], nf;
long long expf[15];

void desc(int n)
{
    nf = 0;
    for(int d = 2; d * d <= n; d += (d == 2) ? 1 : 2)
        if(n % d == 0)
        {
            fp[++nf] = d;
            ex[nf] = 0;
            do
            {
                ++ex[nf];
                n /= d;
            }
            while(n % d == 0);
        }
    if(n > 1)
    {
        fp[++nf] = n;
        ex[nf] = 1;
    }
}

void exp(int n)
{
    for(int i = 1; i <= nf; ++i)
    {
        long long pp = fp[i];
        expf[i] = 0;
        while(n >= pp)
        {
            int k = n / pp;
            expf[i] += pp * k * (k - 1) / 2;
            expf[i] += (n - k * pp + 1) * k;
            pp *= fp[i];
        }
    }
}

int main()
{
    int n, b, t = 10;
    long long nrz;
    while(t--)
    {
        fin >> n >> b;
        desc(b);
        exp(n);
        nrz = INF;
        for(int i = 1; i <= nf; ++i)
            nrz = min(nrz, expf[i] / ex[i]);
        fout << nrz << '\n';
    }
    return 0;
}