A:
Positive:
1 x 79405697 x 113436713 x 61081371 x 11183991 x 87259497 x 15977923 x 86031229 x 6461
Negative:
-1 x -7940569-7 x -1134367-13 x -610813-71 x -111839-91 x -87259-497 x -15977-923 x -8603-1229 x -6461
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 7,940,569, 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 | 7,940,569 | |
| -1 | -7,940,569 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,940,569.
Example:
1 x 7,940,569 = 7,940,569
and
-1 x -7,940,569 = 7,940,569
Notice both answers equal 7,940,569
With that explanation out of the way, let's continue. Next, we take the number 7,940,569 and divide it by 2:
7,940,569 ÷ 2 = 3,970,284.5
If the quotient is a whole number, then 2 and 3,970,284.5 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 | 7,940,569 | |
| -1 | -7,940,569 |
Now, we try dividing 7,940,569 by 3:
7,940,569 ÷ 3 = 2,646,856.3333
If the quotient is a whole number, then 3 and 2,646,856.3333 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 | 7,940,569 | |
| -1 | -7,940,569 |
Let's try dividing by 4:
7,940,569 ÷ 4 = 1,985,142.25
If the quotient is a whole number, then 4 and 1,985,142.25 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 | 7,940,569 | |
| -1 | 7,940,569 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 71 | 91 | 497 | 923 | 1,229 | 6,461 | 8,603 | 15,977 | 87,259 | 111,839 | 610,813 | 1,134,367 | 7,940,569 |
| -1 | -7 | -13 | -71 | -91 | -497 | -923 | -1,229 | -6,461 | -8,603 | -15,977 | -87,259 | -111,839 | -610,813 | -1,134,367 | -7,940,569 |
Here are some more numbers to try:
Try the factor calculator