A:
Positive:
1 x 6511165155 x 1302233037 x 9301664535 x 18603329223 x 29198051115 x 5839611561 x 4171157805 x 83423
Negative:
-1 x -651116515-5 x -130223303-7 x -93016645-35 x -18603329-223 x -2919805-1115 x -583961-1561 x -417115-7805 x -83423
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 651,116,515, 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 | 651,116,515 | |
| -1 | -651,116,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 651,116,515.
Example:
1 x 651,116,515 = 651,116,515
and
-1 x -651,116,515 = 651,116,515
Notice both answers equal 651,116,515
With that explanation out of the way, let's continue. Next, we take the number 651,116,515 and divide it by 2:
651,116,515 ÷ 2 = 325,558,257.5
If the quotient is a whole number, then 2 and 325,558,257.5 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 | 651,116,515 | |
| -1 | -651,116,515 |
Now, we try dividing 651,116,515 by 3:
651,116,515 ÷ 3 = 217,038,838.3333
If the quotient is a whole number, then 3 and 217,038,838.3333 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 | 651,116,515 | |
| -1 | -651,116,515 |
Let's try dividing by 4:
651,116,515 ÷ 4 = 162,779,128.75
If the quotient is a whole number, then 4 and 162,779,128.75 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 | 651,116,515 | |
| -1 | 651,116,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 223 | 1,115 | 1,561 | 7,805 | 83,423 | 417,115 | 583,961 | 2,919,805 | 18,603,329 | 93,016,645 | 130,223,303 | 651,116,515 |
| -1 | -5 | -7 | -35 | -223 | -1,115 | -1,561 | -7,805 | -83,423 | -417,115 | -583,961 | -2,919,805 | -18,603,329 | -93,016,645 | -130,223,303 | -651,116,515 |
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