A:
Positive:
1 x 5728151655 x 11456303313 x 4406270565 x 8812541109 x 5255185545 x 10510371417 x 4042457085 x 80849
Negative:
-1 x -572815165-5 x -114563033-13 x -44062705-65 x -8812541-109 x -5255185-545 x -1051037-1417 x -404245-7085 x -80849
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 572,815,165, 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 | 572,815,165 | |
| -1 | -572,815,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 572,815,165.
Example:
1 x 572,815,165 = 572,815,165
and
-1 x -572,815,165 = 572,815,165
Notice both answers equal 572,815,165
With that explanation out of the way, let's continue. Next, we take the number 572,815,165 and divide it by 2:
572,815,165 ÷ 2 = 286,407,582.5
If the quotient is a whole number, then 2 and 286,407,582.5 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 | 572,815,165 | |
| -1 | -572,815,165 |
Now, we try dividing 572,815,165 by 3:
572,815,165 ÷ 3 = 190,938,388.3333
If the quotient is a whole number, then 3 and 190,938,388.3333 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 | 572,815,165 | |
| -1 | -572,815,165 |
Let's try dividing by 4:
572,815,165 ÷ 4 = 143,203,791.25
If the quotient is a whole number, then 4 and 143,203,791.25 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 | 572,815,165 | |
| -1 | 572,815,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 109 | 545 | 1,417 | 7,085 | 80,849 | 404,245 | 1,051,037 | 5,255,185 | 8,812,541 | 44,062,705 | 114,563,033 | 572,815,165 |
| -1 | -5 | -13 | -65 | -109 | -545 | -1,417 | -7,085 | -80,849 | -404,245 | -1,051,037 | -5,255,185 | -8,812,541 | -44,062,705 | -114,563,033 | -572,815,165 |
Here are some more numbers to try:
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