A:
Positive:
1 x 771873117 x 45404319 x 40624923 x 335597323 x 23897391 x 19741437 x 176631039 x 7429
Negative:
-1 x -7718731-17 x -454043-19 x -406249-23 x -335597-323 x -23897-391 x -19741-437 x -17663-1039 x -7429
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 7,718,731, 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 | 7,718,731 | |
| -1 | -7,718,731 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,718,731.
Example:
1 x 7,718,731 = 7,718,731
and
-1 x -7,718,731 = 7,718,731
Notice both answers equal 7,718,731
With that explanation out of the way, let's continue. Next, we take the number 7,718,731 and divide it by 2:
7,718,731 ÷ 2 = 3,859,365.5
If the quotient is a whole number, then 2 and 3,859,365.5 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 | 7,718,731 | |
| -1 | -7,718,731 |
Now, we try dividing 7,718,731 by 3:
7,718,731 ÷ 3 = 2,572,910.3333
If the quotient is a whole number, then 3 and 2,572,910.3333 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 | 7,718,731 | |
| -1 | -7,718,731 |
Let's try dividing by 4:
7,718,731 ÷ 4 = 1,929,682.75
If the quotient is a whole number, then 4 and 1,929,682.75 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 | 7,718,731 | |
| -1 | 7,718,731 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 23 | 323 | 391 | 437 | 1,039 | 7,429 | 17,663 | 19,741 | 23,897 | 335,597 | 406,249 | 454,043 | 7,718,731 |
| -1 | -17 | -19 | -23 | -323 | -391 | -437 | -1,039 | -7,429 | -17,663 | -19,741 | -23,897 | -335,597 | -406,249 | -454,043 | -7,718,731 |
Here are some more numbers to try:
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