Factors & Multiples Solver

About Factors & Multiples

Factors are numbers that divide a given number cleanly; multiples are what you get when you keep multiplying by an integer. This is where HCF and LCM live, and where most Class 6–8 board questions on numbers come from. The 10 solved examples cover prime factorisation using factor trees, finding HCF and LCM by both the factor-tree and division methods, and the divisibility rules for 2, 3, 4, 5, 6, 8, 9, 10, and 11 — with CBSE-style questions that ask you to use those rules to test large numbers without dividing.

What this calculator does

• Step-by-step working. Every intermediate line is shown, in the layout examiners reward in CBSE / ICSE and university scripts.
• Graphs where they help. Functions and equations are plotted so you can see the result rather than just read it.
• Verification. The answer is substituted back into the original problem so you know the working is consistent.

Frequently Asked Questions