No. The factors of 3 are 1 and 3, so the smallest factor of 3 is 1.
The squares of all prime numbers have 3 factors.
2.444444444444444444...
39 :D
If by "3 to 1" you mean a ratio of 3 to 1 (Which also looks like "3:1"), then yes, because ratios can also be written as fractions, thus, 3:1 = 3/1 and 3/1 = 3.