The radiation from star A is strongest at a wavelength of $500\ \text{nm}$, and from star B at $250\ \text{nm}$. Treat both stars as black bodies, and take Wien's constant as $2.9 \times 10^{-3}\ \text{m K}$. The surface temperature of star A, and how many times more power each square metre of star B's surface gives out compared with star A, are