A:
Positive:
1 x 2782129911 x 252920917 x 163654737 x 751927187 x 148777407 x 68357629 x 442314021 x 6919
Negative:
-1 x -27821299-11 x -2529209-17 x -1636547-37 x -751927-187 x -148777-407 x -68357-629 x -44231-4021 x -6919
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 27,821,299, 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 | 27,821,299 | |
| -1 | -27,821,299 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,821,299.
Example:
1 x 27,821,299 = 27,821,299
and
-1 x -27,821,299 = 27,821,299
Notice both answers equal 27,821,299
With that explanation out of the way, let's continue. Next, we take the number 27,821,299 and divide it by 2:
27,821,299 ÷ 2 = 13,910,649.5
If the quotient is a whole number, then 2 and 13,910,649.5 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 | 27,821,299 | |
| -1 | -27,821,299 |
Now, we try dividing 27,821,299 by 3:
27,821,299 ÷ 3 = 9,273,766.3333
If the quotient is a whole number, then 3 and 9,273,766.3333 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 | 27,821,299 | |
| -1 | -27,821,299 |
Let's try dividing by 4:
27,821,299 ÷ 4 = 6,955,324.75
If the quotient is a whole number, then 4 and 6,955,324.75 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 | 27,821,299 | |
| -1 | 27,821,299 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 37 | 187 | 407 | 629 | 4,021 | 6,919 | 44,231 | 68,357 | 148,777 | 751,927 | 1,636,547 | 2,529,209 | 27,821,299 |
| -1 | -11 | -17 | -37 | -187 | -407 | -629 | -4,021 | -6,919 | -44,231 | -68,357 | -148,777 | -751,927 | -1,636,547 | -2,529,209 | -27,821,299 |
Here are some more numbers to try:
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