To find the factors of a number, we look for the whole numbers that can divide that number without leaving a remainder. Let’s break it down for each of the numbers you mentioned.
Factors of 18:
The factors of 18 are 1, 2, 3, 6, 9, and 18. This is because:
- 1 × 18 = 18
- 2 × 9 = 18
- 3 × 6 = 18
Factors of 19:
The only factors of 19 are 1 and 19. This is because 19 is a prime number, which means it can only be divided by 1 and itself without leaving a remainder.
Factors of 200:
The factors of 200 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, and 200. We can find these by pairing numbers that multiply to give 200:
- 1 × 200 = 200
- 2 × 100 = 200
- 4 × 50 = 200
- 5 × 40 = 200
- 8 × 25 = 200
- 10 × 20 = 200
In summary, the factors of 18 are 1, 2, 3, 6, 9, and 18; the factors of 19 are 1 and 19; and the factors of 200 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, and 200.