A:
Positive:
1 x 715155355 x 143031077 x 1021650513 x 550119535 x 204330165 x 110023991 x 785885455 x 157177
Negative:
-1 x -71515535-5 x -14303107-7 x -10216505-13 x -5501195-35 x -2043301-65 x -1100239-91 x -785885-455 x -157177
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 71,515,535, 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 | 71,515,535 | |
| -1 | -71,515,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,515,535.
Example:
1 x 71,515,535 = 71,515,535
and
-1 x -71,515,535 = 71,515,535
Notice both answers equal 71,515,535
With that explanation out of the way, let's continue. Next, we take the number 71,515,535 and divide it by 2:
71,515,535 ÷ 2 = 35,757,767.5
If the quotient is a whole number, then 2 and 35,757,767.5 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 | 71,515,535 | |
| -1 | -71,515,535 |
Now, we try dividing 71,515,535 by 3:
71,515,535 ÷ 3 = 23,838,511.6667
If the quotient is a whole number, then 3 and 23,838,511.6667 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 | 71,515,535 | |
| -1 | -71,515,535 |
Let's try dividing by 4:
71,515,535 ÷ 4 = 17,878,883.75
If the quotient is a whole number, then 4 and 17,878,883.75 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 | 71,515,535 | |
| -1 | 71,515,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 13 | 35 | 65 | 91 | 455 | 157,177 | 785,885 | 1,100,239 | 2,043,301 | 5,501,195 | 10,216,505 | 14,303,107 | 71,515,535 |
| -1 | -5 | -7 | -13 | -35 | -65 | -91 | -455 | -157,177 | -785,885 | -1,100,239 | -2,043,301 | -5,501,195 | -10,216,505 | -14,303,107 | -71,515,535 |
Here are some more numbers to try:
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