Express each of the following integers as a product of its prime factors:

TO EXPRESS: each of the following numbers as a product of their prime factors 

(i) 420

$420=2^{2} \times 3 \times 5 \times 7$

(ii) 468

$468=2^{2} \times 3^{2} \times 13$

(iii) 945

$945=3^{3} \times 5 \times 7$

(iv) 7325

$7325=5^{2} \times 293$