National Council of Teachers of Mathematics
Nctm: Illuminations: Product Game
The Product Game is a fun, interactive game that exercises your skill with factors and multiples.
Illustrative Mathematics
Illustrative Mathematics: 4.oa the Locker Game
The purpose of this instructional task is for students to deepen their understanding of factors and multiples of whole numbers. Aligns with 4.OA.B.4.
Other
Everyday Math: Factor Bingo
If you love playing Bingo, then you will enjoy this interactive game that focuses on factors and number concepts. Learners select the numbers for the bingo card then, try to find the factors that match. Audio is provided for game...
AAA Math
Aaa Math: Least Common Multiple
This tutorial offers an explanation of least common multiples, practice finding them and a game to play. There is a lot of information available at this location.
Topmarks Online
Topmarks: Multiples and Factors
A multiple-choice game with two game modes. In the first, you need to identify the Lowest Common Multiple and in the second the Highest Common Factor. Questions increase in difficulty depending on accuracy.