A:
Positive:
1 x 6152075237 x 8788678979 x 7787437331 x 1858633553 x 11124912317 x 2655193361 x 18304323527 x 26149
Negative:
-1 x -615207523-7 x -87886789-79 x -7787437-331 x -1858633-553 x -1112491-2317 x -265519-3361 x -183043-23527 x -26149
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 615,207,523, 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 | 615,207,523 | |
| -1 | -615,207,523 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,207,523.
Example:
1 x 615,207,523 = 615,207,523
and
-1 x -615,207,523 = 615,207,523
Notice both answers equal 615,207,523
With that explanation out of the way, let's continue. Next, we take the number 615,207,523 and divide it by 2:
615,207,523 ÷ 2 = 307,603,761.5
If the quotient is a whole number, then 2 and 307,603,761.5 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 | 615,207,523 | |
| -1 | -615,207,523 |
Now, we try dividing 615,207,523 by 3:
615,207,523 ÷ 3 = 205,069,174.3333
If the quotient is a whole number, then 3 and 205,069,174.3333 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 | 615,207,523 | |
| -1 | -615,207,523 |
Let's try dividing by 4:
615,207,523 ÷ 4 = 153,801,880.75
If the quotient is a whole number, then 4 and 153,801,880.75 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 | 615,207,523 | |
| -1 | 615,207,523 |
If you did it right, you will end up with this table:
| 1 | 7 | 79 | 331 | 553 | 2,317 | 3,361 | 23,527 | 26,149 | 183,043 | 265,519 | 1,112,491 | 1,858,633 | 7,787,437 | 87,886,789 | 615,207,523 |
| -1 | -7 | -79 | -331 | -553 | -2,317 | -3,361 | -23,527 | -26,149 | -183,043 | -265,519 | -1,112,491 | -1,858,633 | -7,787,437 | -87,886,789 | -615,207,523 |
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