A:
Positive:
1 x 2153479911 x 195770913 x 165652341 x 525239143 x 150593451 x 47749533 x 404033673 x 5863
Negative:
-1 x -21534799-11 x -1957709-13 x -1656523-41 x -525239-143 x -150593-451 x -47749-533 x -40403-3673 x -5863
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 21,534,799, 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 | 21,534,799 | |
| -1 | -21,534,799 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,534,799.
Example:
1 x 21,534,799 = 21,534,799
and
-1 x -21,534,799 = 21,534,799
Notice both answers equal 21,534,799
With that explanation out of the way, let's continue. Next, we take the number 21,534,799 and divide it by 2:
21,534,799 ÷ 2 = 10,767,399.5
If the quotient is a whole number, then 2 and 10,767,399.5 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 | 21,534,799 | |
| -1 | -21,534,799 |
Now, we try dividing 21,534,799 by 3:
21,534,799 ÷ 3 = 7,178,266.3333
If the quotient is a whole number, then 3 and 7,178,266.3333 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 | 21,534,799 | |
| -1 | -21,534,799 |
Let's try dividing by 4:
21,534,799 ÷ 4 = 5,383,699.75
If the quotient is a whole number, then 4 and 5,383,699.75 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 | 21,534,799 | |
| -1 | 21,534,799 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 41 | 143 | 451 | 533 | 3,673 | 5,863 | 40,403 | 47,749 | 150,593 | 525,239 | 1,656,523 | 1,957,709 | 21,534,799 |
| -1 | -11 | -13 | -41 | -143 | -451 | -533 | -3,673 | -5,863 | -40,403 | -47,749 | -150,593 | -525,239 | -1,656,523 | -1,957,709 | -21,534,799 |
Here are some more numbers to try:
Try the factor calculator