A:
Positive:
1 x 7104366113 x 546489731 x 2291731173 x 410657403 x 1762871019 x 697192249 x 315895363 x 13247
Negative:
-1 x -71043661-13 x -5464897-31 x -2291731-173 x -410657-403 x -176287-1019 x -69719-2249 x -31589-5363 x -13247
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 71,043,661, 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 | 71,043,661 | |
| -1 | -71,043,661 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,043,661.
Example:
1 x 71,043,661 = 71,043,661
and
-1 x -71,043,661 = 71,043,661
Notice both answers equal 71,043,661
With that explanation out of the way, let's continue. Next, we take the number 71,043,661 and divide it by 2:
71,043,661 ÷ 2 = 35,521,830.5
If the quotient is a whole number, then 2 and 35,521,830.5 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 | 71,043,661 | |
| -1 | -71,043,661 |
Now, we try dividing 71,043,661 by 3:
71,043,661 ÷ 3 = 23,681,220.3333
If the quotient is a whole number, then 3 and 23,681,220.3333 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 | 71,043,661 | |
| -1 | -71,043,661 |
Let's try dividing by 4:
71,043,661 ÷ 4 = 17,760,915.25
If the quotient is a whole number, then 4 and 17,760,915.25 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 | 71,043,661 | |
| -1 | 71,043,661 |
If you did it right, you will end up with this table:
| 1 | 13 | 31 | 173 | 403 | 1,019 | 2,249 | 5,363 | 13,247 | 31,589 | 69,719 | 176,287 | 410,657 | 2,291,731 | 5,464,897 | 71,043,661 |
| -1 | -13 | -31 | -173 | -403 | -1,019 | -2,249 | -5,363 | -13,247 | -31,589 | -69,719 | -176,287 | -410,657 | -2,291,731 | -5,464,897 | -71,043,661 |
Here are some more numbers to try:
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