for example, 7 is a divisor of 42 because 42÷7 = 6. we also say that "42 is divisible by 7", "42 is a multiple of 7", "7 divides 42", or "7 is a factor of 42", and we usually write 7 | 42. for example, the positive divisors of 42 are 1, 2, 3, 6, 7, 14, 21, 42.