A:
Positive:
1 x 51542314331 x 1662655373 x 7060591421 x 1224283541 x 9527232263 x 22776113051 x 3949316771 x 30733
Negative:
-1 x -515423143-31 x -16626553-73 x -7060591-421 x -1224283-541 x -952723-2263 x -227761-13051 x -39493-16771 x -30733
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 515,423,143, 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 | 515,423,143 | |
| -1 | -515,423,143 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 515,423,143.
Example:
1 x 515,423,143 = 515,423,143
and
-1 x -515,423,143 = 515,423,143
Notice both answers equal 515,423,143
With that explanation out of the way, let's continue. Next, we take the number 515,423,143 and divide it by 2:
515,423,143 ÷ 2 = 257,711,571.5
If the quotient is a whole number, then 2 and 257,711,571.5 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 | 515,423,143 | |
| -1 | -515,423,143 |
Now, we try dividing 515,423,143 by 3:
515,423,143 ÷ 3 = 171,807,714.3333
If the quotient is a whole number, then 3 and 171,807,714.3333 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 | 515,423,143 | |
| -1 | -515,423,143 |
Let's try dividing by 4:
515,423,143 ÷ 4 = 128,855,785.75
If the quotient is a whole number, then 4 and 128,855,785.75 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 | 515,423,143 | |
| -1 | 515,423,143 |
If you did it right, you will end up with this table:
| 1 | 31 | 73 | 421 | 541 | 2,263 | 13,051 | 16,771 | 30,733 | 39,493 | 227,761 | 952,723 | 1,224,283 | 7,060,591 | 16,626,553 | 515,423,143 |
| -1 | -31 | -73 | -421 | -541 | -2,263 | -13,051 | -16,771 | -30,733 | -39,493 | -227,761 | -952,723 | -1,224,283 | -7,060,591 | -16,626,553 | -515,423,143 |
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