Find all factors, GCF and LCM for any numbers
Grades 4–6Factors (⭐ = GCF, green = shared)
A = 12
B = 18
Shared Factors
GCF (Greatest Common Factor)
6
The largest number that divides both 12 and 18 evenly.
LCM (Least Common Multiple)
36
(12 × 18) ÷ 6 = 36
Prime Factorization
12 =
2^2 × 3
18 =
2 × 3^2
Factor Trees
Click "Tree A" or "Tree B" to see factor trees 🌳