good

from math import sqrt
(n,k) = map(int,input().split())
f = False
d = []
def prost(x):
    for i in range(2,int(sqrt(x))+1):
        if x%i == 0: return False
    else: return True
for i in range(2,n):
    if n%i == 0 and (prost(i) or (i == k**2 and f == True)):
        if i!=k:
            while n%i == 0:
                n = n//i
                d.append(i)
        else: f = True
if n>1: print(-1)
else: print(" ".join(map(str,sorted(d))))