A:
Positive:
1 x 650316555 x 1300633113 x 500243565 x 1000487311 x 2091051555 x 418213217 x 202154043 x 16085
Negative:
-1 x -65031655-5 x -13006331-13 x -5002435-65 x -1000487-311 x -209105-1555 x -41821-3217 x -20215-4043 x -16085
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 65,031,655, 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 | 65,031,655 | |
| -1 | -65,031,655 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,031,655.
Example:
1 x 65,031,655 = 65,031,655
and
-1 x -65,031,655 = 65,031,655
Notice both answers equal 65,031,655
With that explanation out of the way, let's continue. Next, we take the number 65,031,655 and divide it by 2:
65,031,655 ÷ 2 = 32,515,827.5
If the quotient is a whole number, then 2 and 32,515,827.5 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 | 65,031,655 | |
| -1 | -65,031,655 |
Now, we try dividing 65,031,655 by 3:
65,031,655 ÷ 3 = 21,677,218.3333
If the quotient is a whole number, then 3 and 21,677,218.3333 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 | 65,031,655 | |
| -1 | -65,031,655 |
Let's try dividing by 4:
65,031,655 ÷ 4 = 16,257,913.75
If the quotient is a whole number, then 4 and 16,257,913.75 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 | 65,031,655 | |
| -1 | 65,031,655 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 311 | 1,555 | 3,217 | 4,043 | 16,085 | 20,215 | 41,821 | 209,105 | 1,000,487 | 5,002,435 | 13,006,331 | 65,031,655 |
| -1 | -5 | -13 | -65 | -311 | -1,555 | -3,217 | -4,043 | -16,085 | -20,215 | -41,821 | -209,105 | -1,000,487 | -5,002,435 | -13,006,331 | -65,031,655 |
Here are some more numbers to try:
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