A:
Positive:
1 x 711020655 x 1422041331 x 2293615155 x 458723647 x 109895709 x 1002853235 x 219793545 x 20057
Negative:
-1 x -71102065-5 x -14220413-31 x -2293615-155 x -458723-647 x -109895-709 x -100285-3235 x -21979-3545 x -20057
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 71,102,065, 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 | 71,102,065 | |
| -1 | -71,102,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,102,065.
Example:
1 x 71,102,065 = 71,102,065
and
-1 x -71,102,065 = 71,102,065
Notice both answers equal 71,102,065
With that explanation out of the way, let's continue. Next, we take the number 71,102,065 and divide it by 2:
71,102,065 ÷ 2 = 35,551,032.5
If the quotient is a whole number, then 2 and 35,551,032.5 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 | 71,102,065 | |
| -1 | -71,102,065 |
Now, we try dividing 71,102,065 by 3:
71,102,065 ÷ 3 = 23,700,688.3333
If the quotient is a whole number, then 3 and 23,700,688.3333 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 | 71,102,065 | |
| -1 | -71,102,065 |
Let's try dividing by 4:
71,102,065 ÷ 4 = 17,775,516.25
If the quotient is a whole number, then 4 and 17,775,516.25 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 | 71,102,065 | |
| -1 | 71,102,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 647 | 709 | 3,235 | 3,545 | 20,057 | 21,979 | 100,285 | 109,895 | 458,723 | 2,293,615 | 14,220,413 | 71,102,065 |
| -1 | -5 | -31 | -155 | -647 | -709 | -3,235 | -3,545 | -20,057 | -21,979 | -100,285 | -109,895 | -458,723 | -2,293,615 | -14,220,413 | -71,102,065 |
Here are some more numbers to try:
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