A:
Positive:
1 x 5155643155 x 1031128637 x 7365204535 x 14730409887 x 5812454435 x 1162496209 x 8303516607 x 31045
Negative:
-1 x -515564315-5 x -103112863-7 x -73652045-35 x -14730409-887 x -581245-4435 x -116249-6209 x -83035-16607 x -31045
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 515,564,315, 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 | 515,564,315 | |
| -1 | -515,564,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 515,564,315.
Example:
1 x 515,564,315 = 515,564,315
and
-1 x -515,564,315 = 515,564,315
Notice both answers equal 515,564,315
With that explanation out of the way, let's continue. Next, we take the number 515,564,315 and divide it by 2:
515,564,315 ÷ 2 = 257,782,157.5
If the quotient is a whole number, then 2 and 257,782,157.5 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 | 515,564,315 | |
| -1 | -515,564,315 |
Now, we try dividing 515,564,315 by 3:
515,564,315 ÷ 3 = 171,854,771.6667
If the quotient is a whole number, then 3 and 171,854,771.6667 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 | 515,564,315 | |
| -1 | -515,564,315 |
Let's try dividing by 4:
515,564,315 ÷ 4 = 128,891,078.75
If the quotient is a whole number, then 4 and 128,891,078.75 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 | 515,564,315 | |
| -1 | 515,564,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 887 | 4,435 | 6,209 | 16,607 | 31,045 | 83,035 | 116,249 | 581,245 | 14,730,409 | 73,652,045 | 103,112,863 | 515,564,315 |
| -1 | -5 | -7 | -35 | -887 | -4,435 | -6,209 | -16,607 | -31,045 | -83,035 | -116,249 | -581,245 | -14,730,409 | -73,652,045 | -103,112,863 | -515,564,315 |
Here are some more numbers to try:
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