$2^{200} \times 4^{1000} \times 8^{40}=16^{200 \div 4} \times 16^{1000 \div 2} \times 2^{120}$$=16^{50} \times 16^{500} \times 16^{30}=16^{580}$. 
If $2^{200}\times4^{1000}\times8^{40}=16^{}x$, then $x=$~\uline{~~~~~~~~~~}~. 

  * $$295$$ 
  * $$520$$ 
  * $$570$$ 
  * $$580$$ 
  * $$620$$ 