_==0 "exec" "awk" "-f" "$0" "$@"
function f(n,	i,j) {
	i=2;j=0
	while (i^2<=n) { if (n%i==0) { j=n/i; break } i=i+1 }
	if (j==0) { i=1;j=n }
	return sprintf("%.0f %.0f",i,j)
}
{print f($0)}