Factorize a given integer n.

Constraints

• 2 ≤ n ≤ 109

Input

n

An integer n is given in a line.

Output

Print the given integer n and :. Then, print prime factors in ascending order. If n is divisible by a prime factor several times, the prime factor should be printed according to the number of times. Print a space before each prime factor.

Examples

Input

12

Output

12: 2 2 3

Input

126

Output

126: 2 3 3 7

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见题面