Amicable Numbers

Problem Background

Special for beginners, ^_^

Problem Description

A divisor of a natural number $a$ is any natural number that divides $a$, excluding $a$ itself. For example, the divisors of $12$ are $1,2,3,4,6$. If the sum of the divisors of $a$ equals $b$, and the sum of the divisors of $b$ equals $a$, then $a$ and $b$ are called a pair of "amicable numbers". Find the smallest pair of amicable numbers ($a \neq b$).

Input Format

(None)

Output Format

One line containing $a$ and $b$ ($a < b$).

Constraints

1s, 1024KiB for each test case.