From Mathisfun! **Find all the factors of a number** or use their **Prime Factorisation Tool**.

WolframAlpha queries:

**Find all the factors of a number**

**Write a number as a product of its prime factors**

**Highest common factor (greatest common divisor) of two numbers**

**Lowest common multiple of two numbers**

Math Playground – Factors

On Math Playground you can **learn how to use factor trees** to write a number as a product of its prime factors, also to find the HCF and LCM of two numbers.

The highest common factor (GCF) of 24 and 100 is 4 (2×2)

and the lowest common multiple is 600 (2×3×2×2×5×5)

(Note that you can select Help for explanations).

**Calculators & Tools – Menu.**

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