A:
Positive:
1 x 3287614555 x 6575229111 x 2988740555 x 5977481383 x 8583851915 x 1716774213 x 7803515607 x 21065
Negative:
-1 x -328761455-5 x -65752291-11 x -29887405-55 x -5977481-383 x -858385-1915 x -171677-4213 x -78035-15607 x -21065
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 328,761,455, 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 | 328,761,455 | |
| -1 | -328,761,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 328,761,455.
Example:
1 x 328,761,455 = 328,761,455
and
-1 x -328,761,455 = 328,761,455
Notice both answers equal 328,761,455
With that explanation out of the way, let's continue. Next, we take the number 328,761,455 and divide it by 2:
328,761,455 ÷ 2 = 164,380,727.5
If the quotient is a whole number, then 2 and 164,380,727.5 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 | 328,761,455 | |
| -1 | -328,761,455 |
Now, we try dividing 328,761,455 by 3:
328,761,455 ÷ 3 = 109,587,151.6667
If the quotient is a whole number, then 3 and 109,587,151.6667 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 | 328,761,455 | |
| -1 | -328,761,455 |
Let's try dividing by 4:
328,761,455 ÷ 4 = 82,190,363.75
If the quotient is a whole number, then 4 and 82,190,363.75 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 | 328,761,455 | |
| -1 | 328,761,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 383 | 1,915 | 4,213 | 15,607 | 21,065 | 78,035 | 171,677 | 858,385 | 5,977,481 | 29,887,405 | 65,752,291 | 328,761,455 |
| -1 | -5 | -11 | -55 | -383 | -1,915 | -4,213 | -15,607 | -21,065 | -78,035 | -171,677 | -858,385 | -5,977,481 | -29,887,405 | -65,752,291 | -328,761,455 |
Here are some more numbers to try:
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