Divisibility

Divisibility is the ability of a number to be evenly divided by another number. For example, four divided by two is equal to two, an integer, and therefore we say four is divisible by two.

Notation

We commonly write $n|k$. This means that $n$ is a divisor of $k$. So for the example above, we would write 2|4.


See also

Invalid username
Login to AoPS