Factors of 20

📊 Total Factors: 6
🔢 Prime Factors: 2, 5
✅ Number Type: Composite Number

What Are the Factors of 20?

The factors of 20 are 1, 2, 4, 5, 10, 20. A factor is a whole number that divides 20 exactly without leaving a remainder. These factors can be used to simplify fractions, solve math problems, and understand number relationships.

How to Find the Factors of 20

To find the factors of 20, divide the number by whole numbers starting from 1. If the result is a whole number with no remainder, that divisor is a factor.

20 ÷ 1 = 20
20 ÷ 2 = 10
20 ÷ 4 = 5
20 ÷ 5 = 4
20 ÷ 10 = 2
20 ÷ 20 = 1

Is 20 Divisible by Other Numbers?

A number is divisible by another number if the division leaves no remainder.

✅ 20 is divisible by 2
❌ 20 is not divisible by 3
✅ 20 is divisible by 4
✅ 20 is divisible by 5
❌ 20 is not divisible by 6
❌ 20 is not divisible by 7
❌ 20 is not divisible by 8
❌ 20 is not divisible by 9
✅ 20 is divisible by 10

Real-Life Uses of Factors of 20

Factors of 20 are useful in mathematics, grouping objects, simplifying fractions, finding dimensions of rectangles, and solving division problems. Understanding factors helps students build a strong foundation in arithmetic and number theory.

All Factors of 20

1, 2, 4, 5, 10, 20

Factor Pairs of 20

• 1 × 20
• 2 × 10
• 4 × 5

Prime Factorization of 20

20 = 2 × 2 × 5

Worked Example: Finding Factors of 20

Step 1: Start testing numbers from 1 up to 20.

Step 2: Check which numbers divide 20 without leaving a remainder.

Step 3: The successful divisions are:

20 ÷ 1 = 20 (No remainder)
20 ÷ 2 = 10 (No remainder)
20 ÷ 4 = 5 (No remainder)
20 ÷ 5 = 4 (No remainder)
20 ÷ 10 = 2 (No remainder)
20 ÷ 20 = 1 (No remainder)

Answer: Therefore, the factors of 20 are 1, 2, 4, 5, 10, 20.

Number Facts Table

PropertyValue
Number20
Total Factors6
Largest Factor20
Smallest Factor1
Prime Factors2, 5
Even / OddEven
Prime / CompositeComposite
Perfect SquareNo
Perfect CubeNo

Properties of 20

Even or Odd: Even Number

Prime or Composite: Composite Number

Perfect Square: No

Perfect Cube: No

Unique Prime Factors: 2, 5

Interesting Facts About 20

• 20 is a composite number because it has more than two factors.
• 20 is an even number.
• The prime factorization of 20 is 2 × 2 × 5.
• 20 has 6 total factors.

Is 20 Prime or Composite?

20 is a composite number because it has 6 factors.

Related Factors Pages

Factors of 15
Factors of 16
Factors of 17
Factors of 18
Factors of 19
Factors of 21
Factors of 22
Factors of 23
Factors of 24
Factors of 25

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Frequently Asked Questions

What are the factors of 20?
1, 2, 4, 5, 10, 20

How many factors does 20 have?
6

Is 20 a prime number?
No

What is the largest factor of 20?
20

What is the smallest factor of 20?
1

What are the prime factors of 20?
2, 5

Is 20 even or odd?
Even

What is the factor pair of 20?
1 × 20, 2 × 10, 4 × 5