(i) \(648 = 2 \times 2 \times 2 \times 3 \times 3 \times 3 \times 3 = 2^3 . 3^4\)
(ii) \(405 = 3 \times 3 \times 3 \times 3 \times 5 = 3^4 . 5\)
(iii) \(540 = 2 \times 2 \times 3 \times 3 \times 3 \times 5 = 2^2 . 3^3 . 5\)
(iv) \(3600 = 2 \times 2 \times 2 \times 2 \times 3 \times 3 \times 5 \times 5 = 2^4 . 3^2 . 5^2\)