A:
Positive:
1 x 78884202731 x 25446517137 x 5757971281 x 2807267661 x 11934074247 x 1857418711 x 9055720491 x 38497
Negative:
-1 x -788842027-31 x -25446517-137 x -5757971-281 x -2807267-661 x -1193407-4247 x -185741-8711 x -90557-20491 x -38497
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 788,842,027, 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 | 788,842,027 | |
| -1 | -788,842,027 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 788,842,027.
Example:
1 x 788,842,027 = 788,842,027
and
-1 x -788,842,027 = 788,842,027
Notice both answers equal 788,842,027
With that explanation out of the way, let's continue. Next, we take the number 788,842,027 and divide it by 2:
788,842,027 ÷ 2 = 394,421,013.5
If the quotient is a whole number, then 2 and 394,421,013.5 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 | 788,842,027 | |
| -1 | -788,842,027 |
Now, we try dividing 788,842,027 by 3:
788,842,027 ÷ 3 = 262,947,342.3333
If the quotient is a whole number, then 3 and 262,947,342.3333 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 | 788,842,027 | |
| -1 | -788,842,027 |
Let's try dividing by 4:
788,842,027 ÷ 4 = 197,210,506.75
If the quotient is a whole number, then 4 and 197,210,506.75 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 | 788,842,027 | |
| -1 | 788,842,027 |
If you did it right, you will end up with this table:
| 1 | 31 | 137 | 281 | 661 | 4,247 | 8,711 | 20,491 | 38,497 | 90,557 | 185,741 | 1,193,407 | 2,807,267 | 5,757,971 | 25,446,517 | 788,842,027 |
| -1 | -31 | -137 | -281 | -661 | -4,247 | -8,711 | -20,491 | -38,497 | -90,557 | -185,741 | -1,193,407 | -2,807,267 | -5,757,971 | -25,446,517 | -788,842,027 |
Here are some more numbers to try:
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