Factors of 1 to 20

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Created by: Team Maths - Examples.com, Last Updated: August 14, 2024

Factors of 1 to 20

Factors are the numbers you multiply together to get another number. Understanding factors is essential in various mathematical operations, including simplifying fractions, finding the greatest common divisors, and solving problems involving multiples and divisibility. In this guide, we will explore the factors of numbers from 1 to 20. By examining these factors, you will gain a better grasp of how numbers are interconnected and how they can be broken down into their component parts. This foundational knowledge is crucial for advancing in topics such as prime factorization, least common multiples, and algebraic expressions. Let’s delve into the factors of each number from 1 to 20.

Download Factors of 1 to 20 in PDF

Factors of 1 to 20

Download Factors of 1 to 20 in PDF

NumbersFactorsPrime Factors FormPrime/Composite
111Neither
21, 22Prime
31, 33Prime
41, 2, 4Composite
51, 55Prime
61, 2, 3, 62 × 3Composite
71, 77Prime
81, 2, 4, 8Composite
91, 3, 9Composite
101, 2, 5, 102 × 5Composite
111, 1111Prime
121, 2, 3, 4, 6, 122² × 3Composite
131, 1313Prime
141, 2, 7, 142 × 7Composite
151, 3, 5, 153 × 5Composite
161, 2, 4, 8, 162⁴Composite
171, 1717Prime
181, 2, 3, 6, 9, 182 × 3²Composite
191, 1919Prime
201, 2, 4, 5, 10, 202² × 5Composite

Understanding the factors of numbers from 1 to 20 is crucial for building a solid foundation in mathematics. Factors are the numbers that divide a given number exactly without leaving a remainder. For instance, the factors of 1 are just 1; for 2, they are 1 and 2; for 3, they are 1 and 3, and so forth. As numbers increase, they generally have more factors, such as 12, which has the factors 1, 2, 3, 4, 6, and 12. This exploration reveals the importance of prime numbers like 2, 3, 5, 7, 11, 13, 17, and 19, which have only two factors: 1 and themselves. By comprehending the factors of these numbers, students enhance their skills in multiplication, division, and problem-solving, which are essential for advanced mathematical concepts.

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