A:
Positive:
1 x 715610655 x 14312213107 x 668795181 x 395365535 x 133759739 x 96835905 x 790733695 x 19367
Negative:
-1 x -71561065-5 x -14312213-107 x -668795-181 x -395365-535 x -133759-739 x -96835-905 x -79073-3695 x -19367
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 71,561,065, 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 | 71,561,065 | |
| -1 | -71,561,065 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,561,065.
Example:
1 x 71,561,065 = 71,561,065
and
-1 x -71,561,065 = 71,561,065
Notice both answers equal 71,561,065
With that explanation out of the way, let's continue. Next, we take the number 71,561,065 and divide it by 2:
71,561,065 ÷ 2 = 35,780,532.5
If the quotient is a whole number, then 2 and 35,780,532.5 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 | 71,561,065 | |
| -1 | -71,561,065 |
Now, we try dividing 71,561,065 by 3:
71,561,065 ÷ 3 = 23,853,688.3333
If the quotient is a whole number, then 3 and 23,853,688.3333 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 | 71,561,065 | |
| -1 | -71,561,065 |
Let's try dividing by 4:
71,561,065 ÷ 4 = 17,890,266.25
If the quotient is a whole number, then 4 and 17,890,266.25 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 | 71,561,065 | |
| -1 | 71,561,065 |
If you did it right, you will end up with this table:
| 1 | 5 | 107 | 181 | 535 | 739 | 905 | 3,695 | 19,367 | 79,073 | 96,835 | 133,759 | 395,365 | 668,795 | 14,312,213 | 71,561,065 |
| -1 | -5 | -107 | -181 | -535 | -739 | -905 | -3,695 | -19,367 | -79,073 | -96,835 | -133,759 | -395,365 | -668,795 | -14,312,213 | -71,561,065 |
Here are some more numbers to try:
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