A:
Positive:
1 x 6611604355 x 13223208713 x 5085849565 x 10171699223 x 29648451115 x 5929692899 x 22806514495 x 45613
Negative:
-1 x -661160435-5 x -132232087-13 x -50858495-65 x -10171699-223 x -2964845-1115 x -592969-2899 x -228065-14495 x -45613
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 661,160,435, 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 | 661,160,435 | |
| -1 | -661,160,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 661,160,435.
Example:
1 x 661,160,435 = 661,160,435
and
-1 x -661,160,435 = 661,160,435
Notice both answers equal 661,160,435
With that explanation out of the way, let's continue. Next, we take the number 661,160,435 and divide it by 2:
661,160,435 ÷ 2 = 330,580,217.5
If the quotient is a whole number, then 2 and 330,580,217.5 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 | 661,160,435 | |
| -1 | -661,160,435 |
Now, we try dividing 661,160,435 by 3:
661,160,435 ÷ 3 = 220,386,811.6667
If the quotient is a whole number, then 3 and 220,386,811.6667 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 | 661,160,435 | |
| -1 | -661,160,435 |
Let's try dividing by 4:
661,160,435 ÷ 4 = 165,290,108.75
If the quotient is a whole number, then 4 and 165,290,108.75 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 | 661,160,435 | |
| -1 | 661,160,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 223 | 1,115 | 2,899 | 14,495 | 45,613 | 228,065 | 592,969 | 2,964,845 | 10,171,699 | 50,858,495 | 132,232,087 | 661,160,435 |
| -1 | -5 | -13 | -65 | -223 | -1,115 | -2,899 | -14,495 | -45,613 | -228,065 | -592,969 | -2,964,845 | -10,171,699 | -50,858,495 | -132,232,087 | -661,160,435 |
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