A:
Positive:
1 x 788992455 x 1577984953 x 1488665173 x 456065265 x 297733865 x 912131721 x 458458605 x 9169
Negative:
-1 x -78899245-5 x -15779849-53 x -1488665-173 x -456065-265 x -297733-865 x -91213-1721 x -45845-8605 x -9169
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 78,899,245, 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 | 78,899,245 | |
| -1 | -78,899,245 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,899,245.
Example:
1 x 78,899,245 = 78,899,245
and
-1 x -78,899,245 = 78,899,245
Notice both answers equal 78,899,245
With that explanation out of the way, let's continue. Next, we take the number 78,899,245 and divide it by 2:
78,899,245 ÷ 2 = 39,449,622.5
If the quotient is a whole number, then 2 and 39,449,622.5 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 | 78,899,245 | |
| -1 | -78,899,245 |
Now, we try dividing 78,899,245 by 3:
78,899,245 ÷ 3 = 26,299,748.3333
If the quotient is a whole number, then 3 and 26,299,748.3333 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 | 78,899,245 | |
| -1 | -78,899,245 |
Let's try dividing by 4:
78,899,245 ÷ 4 = 19,724,811.25
If the quotient is a whole number, then 4 and 19,724,811.25 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 | 78,899,245 | |
| -1 | 78,899,245 |
If you did it right, you will end up with this table:
| 1 | 5 | 53 | 173 | 265 | 865 | 1,721 | 8,605 | 9,169 | 45,845 | 91,213 | 297,733 | 456,065 | 1,488,665 | 15,779,849 | 78,899,245 |
| -1 | -5 | -53 | -173 | -265 | -865 | -1,721 | -8,605 | -9,169 | -45,845 | -91,213 | -297,733 | -456,065 | -1,488,665 | -15,779,849 | -78,899,245 |
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