A:
Positive:
1 x 3135967913 x 241228317 x 1844687221 x 141899289 x 108511491 x 638693757 x 83474913 x 6383
Negative:
-1 x -31359679-13 x -2412283-17 x -1844687-221 x -141899-289 x -108511-491 x -63869-3757 x -8347-4913 x -6383
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 31,359,679, 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 | 31,359,679 | |
| -1 | -31,359,679 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,359,679.
Example:
1 x 31,359,679 = 31,359,679
and
-1 x -31,359,679 = 31,359,679
Notice both answers equal 31,359,679
With that explanation out of the way, let's continue. Next, we take the number 31,359,679 and divide it by 2:
31,359,679 ÷ 2 = 15,679,839.5
If the quotient is a whole number, then 2 and 15,679,839.5 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 | 31,359,679 | |
| -1 | -31,359,679 |
Now, we try dividing 31,359,679 by 3:
31,359,679 ÷ 3 = 10,453,226.3333
If the quotient is a whole number, then 3 and 10,453,226.3333 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 | 31,359,679 | |
| -1 | -31,359,679 |
Let's try dividing by 4:
31,359,679 ÷ 4 = 7,839,919.75
If the quotient is a whole number, then 4 and 7,839,919.75 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 | 31,359,679 | |
| -1 | 31,359,679 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 221 | 289 | 491 | 3,757 | 4,913 | 6,383 | 8,347 | 63,869 | 108,511 | 141,899 | 1,844,687 | 2,412,283 | 31,359,679 |
| -1 | -13 | -17 | -221 | -289 | -491 | -3,757 | -4,913 | -6,383 | -8,347 | -63,869 | -108,511 | -141,899 | -1,844,687 | -2,412,283 | -31,359,679 |
Here are some more numbers to try:
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