A:
Positive:
1 x 6342107877 x 9060154173 x 8687819181 x 3503927511 x 12411171267 x 5005616857 x 9249113213 x 47999
Negative:
-1 x -634210787-7 x -90601541-73 x -8687819-181 x -3503927-511 x -1241117-1267 x -500561-6857 x -92491-13213 x -47999
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 634,210,787, 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 | 634,210,787 | |
| -1 | -634,210,787 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 634,210,787.
Example:
1 x 634,210,787 = 634,210,787
and
-1 x -634,210,787 = 634,210,787
Notice both answers equal 634,210,787
With that explanation out of the way, let's continue. Next, we take the number 634,210,787 and divide it by 2:
634,210,787 ÷ 2 = 317,105,393.5
If the quotient is a whole number, then 2 and 317,105,393.5 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 | 634,210,787 | |
| -1 | -634,210,787 |
Now, we try dividing 634,210,787 by 3:
634,210,787 ÷ 3 = 211,403,595.6667
If the quotient is a whole number, then 3 and 211,403,595.6667 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 | 634,210,787 | |
| -1 | -634,210,787 |
Let's try dividing by 4:
634,210,787 ÷ 4 = 158,552,696.75
If the quotient is a whole number, then 4 and 158,552,696.75 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 | 634,210,787 | |
| -1 | 634,210,787 |
If you did it right, you will end up with this table:
| 1 | 7 | 73 | 181 | 511 | 1,267 | 6,857 | 13,213 | 47,999 | 92,491 | 500,561 | 1,241,117 | 3,503,927 | 8,687,819 | 90,601,541 | 634,210,787 |
| -1 | -7 | -73 | -181 | -511 | -1,267 | -6,857 | -13,213 | -47,999 | -92,491 | -500,561 | -1,241,117 | -3,503,927 | -8,687,819 | -90,601,541 | -634,210,787 |
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