In how many ways can the number 243 be resolved into two factors?

In how many ways can the number 243 be resolved into two factors?

(a)12

(b)18

(c)20

(d)10

Answer: 12

Explanation:

243=3*3*3*3*3=3⁵

Number of factors=(5+1)=6

Required number of ways=6/2=3