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# What are the factors of 45?

The factors of 45 are 1, 3, 9, 15 and 45. A factor is a number or algebraic expression that divides into another number or expression evenly with no remainder.

Continue ReadingA positive integer greater than 1 that has only two factors is considered a prime number. Numbers that have more than two factors are considered composite numbers. Factors that are prime numbers are called prime factors. A number can also be expressed in terms of its prime factors, with few exceptions. For example, the number 60 can be expressed as the product of 2, 2, 3 and 5. Methods of factoring large whole numbers is a key part of cryptology, and Internet data security relies on them.

Mathematicians from Pythagoras' School between 500 and 300 B.C. were interested in mystical and numerological properties of numbers. A number was considered a perfect number if its factors, also called divisors, added up to the number itself. For example, the factors of 6 are 1, 2 and 3. Added together, these factors equal 6. Another number that is considered perfect is 28. Amicable numbers are pairs in which the factors of one number add up to the other number, such as 220 and 284.

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Q:
## What are some interesting facts about the number 30?

A: Some interesting facts about the number 30 are that it is an even number that has eight factors, of which three are the prime numbers 2, 3 and 5. The prime... Full Answer >Filed Under: -
Q:
## What are the factors of 16?

A: The factors of 16 are 1, 2, 4, 8 and 16. The number 16 has the uncommon trait of having an odd number of factors because it's a square number. Full Answer >Filed Under: -
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## What are the factors of 180?

A: The factors of 180 are one, two, three, four, five, six, nine, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90 and 180. Any number that can divide into another numb... Full Answer >Filed Under: -
Q:
## What are the factors of 44?

A: The factors of 44 are 1, 2, 4, 11, 22 and 44. These are the numbers that, when multiplied together, give a product of 44—1 x 44 = 44, 2 x 22 = 44, and 4 x ... Full Answer >Filed Under: