$18 = $ ?

$2 \times 3$ $2 \times 3^{2}$ $2^{2} \times 3^{2}$ $2 \times 3^{2} \times 5$ $2 \times 3^{2} \times 13$

$405 = $ ?

$3^{4} \times 5$ $3^{4} \times 5 \times 11$ $2 \times 3^{4} \times 5$ $3^{3} \times 5$ $3^{4} \times 5 \times 19$

$945 = $ ?

$3^{3} \times 5 \times 7 \times 13$ $3^{4} \times 5 \times 7$ $2 \times 3^{3} \times 5 \times 7$ $3^{3} \times 5 \times 7 \times 19$ $3^{3} \times 5 \times 7$

$567 = $ ?

$3^{4} \times 7 \times 17$ $3^{4} \times 7^{2}$ $3^{2} \times 7$ $3^{4} \times 7$ $3^{5} \times 7$

$90 = $ ?

$2 \times 3^{3} \times 5$ $2 \times 3^{2} \times 5 \times 19$ $2 \times 3^{2} \times 5^{2}$ $2 \times 3^{2} \times 5 \times 7$ $2 \times 3^{2} \times 5$