A:
Positive:
1 x 7122553113 x 547888779 x 901589223 x 319397311 x 2290211027 x 693532899 x 245694043 x 17617
Negative:
-1 x -71225531-13 x -5478887-79 x -901589-223 x -319397-311 x -229021-1027 x -69353-2899 x -24569-4043 x -17617
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 71,225,531, 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 | 71,225,531 | |
| -1 | -71,225,531 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,225,531.
Example:
1 x 71,225,531 = 71,225,531
and
-1 x -71,225,531 = 71,225,531
Notice both answers equal 71,225,531
With that explanation out of the way, let's continue. Next, we take the number 71,225,531 and divide it by 2:
71,225,531 ÷ 2 = 35,612,765.5
If the quotient is a whole number, then 2 and 35,612,765.5 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 | 71,225,531 | |
| -1 | -71,225,531 |
Now, we try dividing 71,225,531 by 3:
71,225,531 ÷ 3 = 23,741,843.6667
If the quotient is a whole number, then 3 and 23,741,843.6667 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 | 71,225,531 | |
| -1 | -71,225,531 |
Let's try dividing by 4:
71,225,531 ÷ 4 = 17,806,382.75
If the quotient is a whole number, then 4 and 17,806,382.75 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 | 71,225,531 | |
| -1 | 71,225,531 |
If you did it right, you will end up with this table:
| 1 | 13 | 79 | 223 | 311 | 1,027 | 2,899 | 4,043 | 17,617 | 24,569 | 69,353 | 229,021 | 319,397 | 901,589 | 5,478,887 | 71,225,531 |
| -1 | -13 | -79 | -223 | -311 | -1,027 | -2,899 | -4,043 | -17,617 | -24,569 | -69,353 | -229,021 | -319,397 | -901,589 | -5,478,887 | -71,225,531 |
Here are some more numbers to try:
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