The prime factors of 18 are 2, 3, and 3. The product of these prime factors is 18. The distinct prime factors of 18 are 2 and 3. The product of these distinct prime factors is 6.

It is simply the whole number written as the product of its prime factors. It is simply the whole number written as the product of its prime factors. It is simply the whole number written as the product of its prime factors. It is simply the whole number written as the product of its prime factors.

The product of the prime factors of 218 is 218. The prime factors of 218 are 2 and 109, making their product 2 x 109 = 218! I wouldn't expect it to be otherwise: the product of the prime factors of a number equal the number.

The prime factors of 60 are 2, 2, 3, and 5. The prime factors of 105 are 3, 5, and 7. The prime numbers that are factors of both 60 and 105 are 3 and 5.