Is there a difference between divisors and factors? Are they the same or are there differences?
Example: Find the factors and divisors of 18.
What I have found is answers that contradict each other:
Onlinemath4all:
Factors don't include one and the number itself. So for the example that would be 2,3,6 and 9
Divisors do include them. So for the example that would be: 1,2,3,6,9 and 18
Quora:
There is no difference between factors and divisors. So for the example 1,2,3,6,9 and 18 would all be divisors and factors.
Someone also replies there that a divisor can be any number (even with a non zero remainder). In that case 5 could also be a divisor of 18 (with a remainder).
Best Answer
The answer is in the comment of Lonza Leggiera and can be found in the following wolfram entries:
Factor
Divisor
Proper divisor
Proper factor