What are factors?

  • The factors of a number are any numbers that divide into it exactly.

For example:

The factors of \({6}\) are \({1}\), \({2}\), \({3}\) and \({6}\).

The factors of \({10}\) are \({1}\), \({2}\), \({5}\) and \({10}\).

The factors of \({11}\) are \({1}\) and \({11}\) (so \({11}\) is a prime number).

Question

What are the factors of the following numbers?

  1. \[27\]
  2. \[16\]
  3. \[40\]
  1. \(1\), \(3\), \(9\), \(27\)
  2. \(1\), \(2\), \(4\), \(8\), \(16\)
  3. \(1\), \(2\), \(4\), \(5\), \(8\), \(10\), \(20\), \(40\)