A:
Positive:
1 x 5156540155 x 10313080319 x 2713968537 x 1393659595 x 5427937185 x 2787319703 x 7335053515 x 146701
Negative:
-1 x -515654015-5 x -103130803-19 x -27139685-37 x -13936595-95 x -5427937-185 x -2787319-703 x -733505-3515 x -146701
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 515,654,015, 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 | 515,654,015 | |
| -1 | -515,654,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 515,654,015.
Example:
1 x 515,654,015 = 515,654,015
and
-1 x -515,654,015 = 515,654,015
Notice both answers equal 515,654,015
With that explanation out of the way, let's continue. Next, we take the number 515,654,015 and divide it by 2:
515,654,015 ÷ 2 = 257,827,007.5
If the quotient is a whole number, then 2 and 257,827,007.5 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 | 515,654,015 | |
| -1 | -515,654,015 |
Now, we try dividing 515,654,015 by 3:
515,654,015 ÷ 3 = 171,884,671.6667
If the quotient is a whole number, then 3 and 171,884,671.6667 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 | 515,654,015 | |
| -1 | -515,654,015 |
Let's try dividing by 4:
515,654,015 ÷ 4 = 128,913,503.75
If the quotient is a whole number, then 4 and 128,913,503.75 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 | 515,654,015 | |
| -1 | 515,654,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 37 | 95 | 185 | 703 | 3,515 | 146,701 | 733,505 | 2,787,319 | 5,427,937 | 13,936,595 | 27,139,685 | 103,130,803 | 515,654,015 |
| -1 | -5 | -19 | -37 | -95 | -185 | -703 | -3,515 | -146,701 | -733,505 | -2,787,319 | -5,427,937 | -13,936,595 | -27,139,685 | -103,130,803 | -515,654,015 |
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