A:
Positive:
1 x 210745555 x 421491123 x 916285115 x 183257401 x 52555457 x 461152005 x 105112285 x 9223
Negative:
-1 x -21074555-5 x -4214911-23 x -916285-115 x -183257-401 x -52555-457 x -46115-2005 x -10511-2285 x -9223
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 21,074,555, 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 | 21,074,555 | |
| -1 | -21,074,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,074,555.
Example:
1 x 21,074,555 = 21,074,555
and
-1 x -21,074,555 = 21,074,555
Notice both answers equal 21,074,555
With that explanation out of the way, let's continue. Next, we take the number 21,074,555 and divide it by 2:
21,074,555 ÷ 2 = 10,537,277.5
If the quotient is a whole number, then 2 and 10,537,277.5 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 | 21,074,555 | |
| -1 | -21,074,555 |
Now, we try dividing 21,074,555 by 3:
21,074,555 ÷ 3 = 7,024,851.6667
If the quotient is a whole number, then 3 and 7,024,851.6667 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 | 21,074,555 | |
| -1 | -21,074,555 |
Let's try dividing by 4:
21,074,555 ÷ 4 = 5,268,638.75
If the quotient is a whole number, then 4 and 5,268,638.75 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 | 21,074,555 | |
| -1 | 21,074,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 401 | 457 | 2,005 | 2,285 | 9,223 | 10,511 | 46,115 | 52,555 | 183,257 | 916,285 | 4,214,911 | 21,074,555 |
| -1 | -5 | -23 | -115 | -401 | -457 | -2,005 | -2,285 | -9,223 | -10,511 | -46,115 | -52,555 | -183,257 | -916,285 | -4,214,911 | -21,074,555 |
Here are some more numbers to try:
Try the factor calculator