$81 = $ ?

$3^{4} \times 5$ $3^{4}$ $3^{4} \times 19$ $3^{4} \times 17$ $3^{3}$

$1400 = $ ?

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

$405 = $ ?

$3^{4} \times 5$ $3^{4} \times 5 \times 13$ $3^{3} \times 5$ $3^{4} \times 5 \times 17$ $3^{4} \times 5 \times 7$

$60 = $ ?

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

$945 = $ ?

$3^{2} \times 5 \times 7$ $3^{3} \times 5 \times 7 \times 19$ $3 \times 5 \times 7$ $3^{3} \times 5 \times 7$ $3^{3} \times 5 \times 7 \times 11$