The factors of 128 are 1, 2, 4, 8, 16, 32, 64, and 128. All the different pair combinations from the factors of 128 above are the Factor Pairs of 128. Below is the list of all the Factor Pairs of 128. As you can see, all Factor Pairs of 128 equal 128 when you multiply them together.

What are the pair factors of 125? 1x 125 = 125, 5 x 25 = 125 , 25 x 5 =125, and 125 x 1 = 125.

Factors of 121: 1, 11, 121. Factor pairs: 121 = 1 × 121 or 11 × 11.

135 = 1 x 135, 3 x 45, 5 x 27, or 9 x 15.

84 = 1 x 84, 2 x 42, 3 x 28, 4 x 21, 6 x 14, or 7 x 12.

So we know that 15 × 15 = 225. In such cases, the number 225 is called a perfect square. Hence, the factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, and 225.

2 × 98 = 196. 4 × 49 = 196. 7 × 28 = 196. 14 × 14 = 196.

8 times 4 equals 32. This is a basic multiplication fact that you should know.

15

225 and Level 6

• 225 is a composite number and a perfect square.
• Prime factorization: 225 = 3 x 3 x 5 x 5, which can be written 225 = (3^2) x (5^2)
• The exponents in the prime factorization are 2 and 2.
• Factors of 225: 1, 3, 5, 9, 15, 25, 45, 75, 225.
• Factor pairs: 225 = 1 x 225, 3 x 75, 5 x 45, 9 x 25, or 15 x 15.

The factors of 128 are 1, 2, 4, 8, 16, 32, 64, and 128.

Factors of 45 are integers that can be divided evenly into 45. There are a total of 6 factors of 45 i.e. 1, 3, 5, 9, 15, and 45. The sum of all factors of 45 is 78. Its Prime Factors are 1, 3, 5, 9, 15, 45, and (1, 45), (3, 15) and (5, 9) are Pair Factors.

Solution: The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90.

The factors of 91 are 1, 7, 13, 91 and its negative factors are -1, -7, -13, -91.

Now, we know 5 is a prime number and it has only two factors; 1 and 5. Therefore, we cannot continue with the division method further. So, the prime factors of 90 are 2 × 3 × 3 × 5 or 2 × 32 × 5, where 2, 3 and 5 are the prime numbers.

Multiples of 90 are 90, 180, 270, 360, 450…..

Factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90. So, 90 can be derived from smaller number in 6 possible ways using multiplication. Factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90. So, 90 can be derived from smaller number in 6 possible ways using multiplication.

The multiples of 180 are 180 × 1 = 180, 180 × 2 = 360, 180 × 3 = 540, 180 × 4 = 720, 180 × 5 = 900, . . . . . . . . . 180 × 12 = 2160, 180 × 13 = 2340, 180 × 14 = 2520, 180 × 15 = 2700, . . . . . . . . . and so on.

Table of Factors and Multiples

Do you observe that the multiples of 40 have a pattern of. Yes, here you learned another method to find multiples, i.e., the addition of a number. According to this, the first five multiples you just learned are 40, 80, 120, 160 and 200.

Explanation: The 2nd multiple of 40 is 80. The 4th multiple of 40 is 160. Therefore, the difference between the 2nd and 4th multiple of 40 is 80.

8 factors

Greatest Common Factor (GCF) of two numbers the factors of 40 are 1, 2, 4, 5, 8, 10, 20 and 40, and the factors of 50 are 1, 2, 5, 10, 25 and 50.

But 40 is not divisible by 6. — 6 is not a factor of 40. For numbers greater than 8 to be factors of 40 they would have to be multiplied by something less than the 5 we use in 8×5=40 .

Thus, the factors of 40 are 1, 2, 4, 5, 8, 10, 20 and 40.

Answer and Explanation: The greatest common factor of 30 and 40 is 10.

40 = 1 x 40, 2 x 20, 4 x 10, or 5 x 8. Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40. Prime factorization: 40 = 2 x 2 x 2 x 5, which can also be written 2³ x 5.

Square of 40: 40² = 1600