All factors of a number

All factors of a number

Example number 40=2x2x2x5:

Prime factors of 40 are: 2, 2, 2 and 5.

Split up these 4 factors into all combinations of 2 and 3 factors:

• 2x2=4 and 2x5=10,
• 2x2x2=8 and 5,
• 2x2x5=20 and 2.

Out of these six factors: 2, 4, 5, 8, 10, 20, the factors 2 and 5 are prime factors and the rest are the new non-prime factors 4, 8, 10 and 20.

• All factors of the number 40 are: 2, 2, 2, 5, 4, 8, 10 and 20—a total of 8 factors.