Step-by-step solution to find the factors and factor pairs of 391:
- If a whole number divides 391 evenly (remainder = 0), then it is a factor of 391 (divisor factor), and the corresponding quotient is also a factor of 391 (quotient factor)
- Divisor factors and quotient factors form a complete list of the factors and factor pairs of 391
- With the exception of 0, all whole numbers less than or equal to the square root of 391 (√391 ) are possible divisor factors of 391
- √391 = 19.7737
- Possible Divisor Factors of 391: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
- Filter list of possible divisor factors by testing divisibility of 391 by 2, 3, 4, 5, 9, and 10
- Possible Divisor Factors of 391 (filtered): 1, 7, 11, 13, 17, 19
- Divide 391 by the possible divisor factors in the filtered list
- Factors of 391: 1, 17, 23, 391
- Factor Pairs of 391: (1*391) (17*23)
- Note: the first number in each factor pair is a divisor factor and the second number is a corresponding quotient factor
