n,k=map(int,input().split())
import math
d={}
maxi=0
for i in range(2,math.floor(n**0.5)+1):
    if n%i==0:
        cnt=0
        nq=n
        while nq%i==0:
            nq//=i
            cnt+=1
        d[cnt]=i
        maxi=max(maxi,cnt)
ans=d[maxi]
#print(ans,n)
print(n//ans)