If \(a\) divides \(b\), we write \(a \mid b\), and we may say that \(a\) is a divisor of \(b\), or that \(b\) is a multiple of \(a\), or that \(b\) is a divisible of \(a\). For example, \(a \mid a\) b...If \(a\) divides \(b\), we write \(a \mid b\), and we may say that \(a\) is a divisor of \(b\), or that \(b\) is a multiple of \(a\), or that \(b\) is a divisible of \(a\). For example, \(a \mid a\) because we can write \(a \cdot 1= a\); \(1 \mid a\) because we can write \(1 \cdot a= a\); \(a \mid 0\) because we can write \(a \cdot 0= 0\).
