18.py

n = int(input())
arr = []

if n == 1:
    print(1)
else:
    while True:
        for i in range(2, n // 2):
            if n % i == 0:
                arr.append(i)
                n //= i
                break
        else:
            arr.append(n)
            break
    
print(*arr, sep=" * ")