# your code goes here
N,K=(int(i) for i in input().split())
i=2
j=2
g=[0]
if K==1:
    g=[N,1]
while g[-1]!=1:
    i=j
    while N%i!=0 and i*i<=N and g[-1]!=1:
        i+=1
    if i*i<=N and g[-1]!=1:
      #  if i>=K:
        g.append(N//i)
        g.append(1)
   #     else:
#            g.append(i)
 #           N//=i
     #       j=i
    elif i*i>N:
        g.append(1)
if g[0]==0:
    g[0]=1
p=1
for i in range(len(g)):
    p*=g[i]
print(p)