A:
Positive:
1 x 79737917 x 113911343 x 18543759 x 135149301 x 26491413 x 19307449 x 177592537 x 3143
Negative:
-1 x -7973791-7 x -1139113-43 x -185437-59 x -135149-301 x -26491-413 x -19307-449 x -17759-2537 x -3143
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 7,973,791, 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 | 7,973,791 | |
| -1 | -7,973,791 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,973,791.
Example:
1 x 7,973,791 = 7,973,791
and
-1 x -7,973,791 = 7,973,791
Notice both answers equal 7,973,791
With that explanation out of the way, let's continue. Next, we take the number 7,973,791 and divide it by 2:
7,973,791 ÷ 2 = 3,986,895.5
If the quotient is a whole number, then 2 and 3,986,895.5 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 | 7,973,791 | |
| -1 | -7,973,791 |
Now, we try dividing 7,973,791 by 3:
7,973,791 ÷ 3 = 2,657,930.3333
If the quotient is a whole number, then 3 and 2,657,930.3333 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 | 7,973,791 | |
| -1 | -7,973,791 |
Let's try dividing by 4:
7,973,791 ÷ 4 = 1,993,447.75
If the quotient is a whole number, then 4 and 1,993,447.75 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 | 7,973,791 | |
| -1 | 7,973,791 |
If you did it right, you will end up with this table:
| 1 | 7 | 43 | 59 | 301 | 413 | 449 | 2,537 | 3,143 | 17,759 | 19,307 | 26,491 | 135,149 | 185,437 | 1,139,113 | 7,973,791 |
| -1 | -7 | -43 | -59 | -301 | -413 | -449 | -2,537 | -3,143 | -17,759 | -19,307 | -26,491 | -135,149 | -185,437 | -1,139,113 | -7,973,791 |
Here are some more numbers to try:
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