A:
Positive:
1 x 3272842111 x 297531159 x 554719211 x 155111239 x 136939649 x 504292321 x 141012629 x 12449
Negative:
-1 x -32728421-11 x -2975311-59 x -554719-211 x -155111-239 x -136939-649 x -50429-2321 x -14101-2629 x -12449
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 32,728,421, 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 | 32,728,421 | |
| -1 | -32,728,421 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 32,728,421.
Example:
1 x 32,728,421 = 32,728,421
and
-1 x -32,728,421 = 32,728,421
Notice both answers equal 32,728,421
With that explanation out of the way, let's continue. Next, we take the number 32,728,421 and divide it by 2:
32,728,421 ÷ 2 = 16,364,210.5
If the quotient is a whole number, then 2 and 16,364,210.5 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 | 32,728,421 | |
| -1 | -32,728,421 |
Now, we try dividing 32,728,421 by 3:
32,728,421 ÷ 3 = 10,909,473.6667
If the quotient is a whole number, then 3 and 10,909,473.6667 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 | 32,728,421 | |
| -1 | -32,728,421 |
Let's try dividing by 4:
32,728,421 ÷ 4 = 8,182,105.25
If the quotient is a whole number, then 4 and 8,182,105.25 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 | 32,728,421 | |
| -1 | 32,728,421 |
If you did it right, you will end up with this table:
| 1 | 11 | 59 | 211 | 239 | 649 | 2,321 | 2,629 | 12,449 | 14,101 | 50,429 | 136,939 | 155,111 | 554,719 | 2,975,311 | 32,728,421 |
| -1 | -11 | -59 | -211 | -239 | -649 | -2,321 | -2,629 | -12,449 | -14,101 | -50,429 | -136,939 | -155,111 | -554,719 | -2,975,311 | -32,728,421 |
Here are some more numbers to try:
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