A:
Positive:
1 x 3832071111 x 348370113 x 2947747143 x 267977173 x 2215071549 x 247391903 x 201372249 x 17039
Negative:
-1 x -38320711-11 x -3483701-13 x -2947747-143 x -267977-173 x -221507-1549 x -24739-1903 x -20137-2249 x -17039
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 38,320,711, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 38,320,711 | |
| -1 | -38,320,711 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 38,320,711.
Example:
1 x 38,320,711 = 38,320,711
and
-1 x -38,320,711 = 38,320,711
Notice both answers equal 38,320,711
With that explanation out of the way, let's continue. Next, we take the number 38,320,711 and divide it by 2:
38,320,711 ÷ 2 = 19,160,355.5
If the quotient is a whole number, then 2 and 19,160,355.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 38,320,711 | |
| -1 | -38,320,711 |
Now, we try dividing 38,320,711 by 3:
38,320,711 ÷ 3 = 12,773,570.3333
If the quotient is a whole number, then 3 and 12,773,570.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 38,320,711 | |
| -1 | -38,320,711 |
Let's try dividing by 4:
38,320,711 ÷ 4 = 9,580,177.75
If the quotient is a whole number, then 4 and 9,580,177.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 38,320,711 | |
| -1 | 38,320,711 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 173 | 1,549 | 1,903 | 2,249 | 17,039 | 20,137 | 24,739 | 221,507 | 267,977 | 2,947,747 | 3,483,701 | 38,320,711 |
| -1 | -11 | -13 | -143 | -173 | -1,549 | -1,903 | -2,249 | -17,039 | -20,137 | -24,739 | -221,507 | -267,977 | -2,947,747 | -3,483,701 | -38,320,711 |
Here are some more numbers to try:
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