#!/bin/bash

function factor {
	value = $1
	if (( (value==1)||(value==2) )); then
		return value;
	else
		i=$((value - 1));
		while (( (value % i)!=0 )); do
			(( i-=1 ))
		done
		return ( "$(( value / i ))" , "$(( factor i ))" )
	fi
}

factor 10