A:
Positive:
1 x 15243123117 x 896654337 x 411976367 x 2275093629 x 2423391139 x 1338292479 x 614893617 x 42143
Negative:
-1 x -152431231-17 x -8966543-37 x -4119763-67 x -2275093-629 x -242339-1139 x -133829-2479 x -61489-3617 x -42143
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 152,431,231, 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 | 152,431,231 | |
| -1 | -152,431,231 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 152,431,231.
Example:
1 x 152,431,231 = 152,431,231
and
-1 x -152,431,231 = 152,431,231
Notice both answers equal 152,431,231
With that explanation out of the way, let's continue. Next, we take the number 152,431,231 and divide it by 2:
152,431,231 ÷ 2 = 76,215,615.5
If the quotient is a whole number, then 2 and 76,215,615.5 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 | 152,431,231 | |
| -1 | -152,431,231 |
Now, we try dividing 152,431,231 by 3:
152,431,231 ÷ 3 = 50,810,410.3333
If the quotient is a whole number, then 3 and 50,810,410.3333 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 | 152,431,231 | |
| -1 | -152,431,231 |
Let's try dividing by 4:
152,431,231 ÷ 4 = 38,107,807.75
If the quotient is a whole number, then 4 and 38,107,807.75 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 | 152,431,231 | |
| -1 | 152,431,231 |
If you did it right, you will end up with this table:
| 1 | 17 | 37 | 67 | 629 | 1,139 | 2,479 | 3,617 | 42,143 | 61,489 | 133,829 | 242,339 | 2,275,093 | 4,119,763 | 8,966,543 | 152,431,231 |
| -1 | -17 | -37 | -67 | -629 | -1,139 | -2,479 | -3,617 | -42,143 | -61,489 | -133,829 | -242,339 | -2,275,093 | -4,119,763 | -8,966,543 | -152,431,231 |
Here are some more numbers to try:
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