A:
Positive:
1 x 61511621347 x 1308757967 x 9180839229 x 2686097853 x 7211213149 x 19533710763 x 5715115343 x 40091
Negative:
-1 x -615116213-47 x -13087579-67 x -9180839-229 x -2686097-853 x -721121-3149 x -195337-10763 x -57151-15343 x -40091
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 615,116,213, 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 | 615,116,213 | |
| -1 | -615,116,213 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 615,116,213.
Example:
1 x 615,116,213 = 615,116,213
and
-1 x -615,116,213 = 615,116,213
Notice both answers equal 615,116,213
With that explanation out of the way, let's continue. Next, we take the number 615,116,213 and divide it by 2:
615,116,213 ÷ 2 = 307,558,106.5
If the quotient is a whole number, then 2 and 307,558,106.5 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 | 615,116,213 | |
| -1 | -615,116,213 |
Now, we try dividing 615,116,213 by 3:
615,116,213 ÷ 3 = 205,038,737.6667
If the quotient is a whole number, then 3 and 205,038,737.6667 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 | 615,116,213 | |
| -1 | -615,116,213 |
Let's try dividing by 4:
615,116,213 ÷ 4 = 153,779,053.25
If the quotient is a whole number, then 4 and 153,779,053.25 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 | 615,116,213 | |
| -1 | 615,116,213 |
If you did it right, you will end up with this table:
| 1 | 47 | 67 | 229 | 853 | 3,149 | 10,763 | 15,343 | 40,091 | 57,151 | 195,337 | 721,121 | 2,686,097 | 9,180,839 | 13,087,579 | 615,116,213 |
| -1 | -47 | -67 | -229 | -853 | -3,149 | -10,763 | -15,343 | -40,091 | -57,151 | -195,337 | -721,121 | -2,686,097 | -9,180,839 | -13,087,579 | -615,116,213 |
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