A:
Positive:
1 x 221385855 x 44277177 x 316265535 x 632531281 x 787851405 x 157571967 x 112552251 x 9835
Negative:
-1 x -22138585-5 x -4427717-7 x -3162655-35 x -632531-281 x -78785-1405 x -15757-1967 x -11255-2251 x -9835
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 22,138,585, 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 | 22,138,585 | |
| -1 | -22,138,585 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 22,138,585.
Example:
1 x 22,138,585 = 22,138,585
and
-1 x -22,138,585 = 22,138,585
Notice both answers equal 22,138,585
With that explanation out of the way, let's continue. Next, we take the number 22,138,585 and divide it by 2:
22,138,585 ÷ 2 = 11,069,292.5
If the quotient is a whole number, then 2 and 11,069,292.5 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 | 22,138,585 | |
| -1 | -22,138,585 |
Now, we try dividing 22,138,585 by 3:
22,138,585 ÷ 3 = 7,379,528.3333
If the quotient is a whole number, then 3 and 7,379,528.3333 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 | 22,138,585 | |
| -1 | -22,138,585 |
Let's try dividing by 4:
22,138,585 ÷ 4 = 5,534,646.25
If the quotient is a whole number, then 4 and 5,534,646.25 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 | 22,138,585 | |
| -1 | 22,138,585 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 281 | 1,405 | 1,967 | 2,251 | 9,835 | 11,255 | 15,757 | 78,785 | 632,531 | 3,162,655 | 4,427,717 | 22,138,585 |
| -1 | -5 | -7 | -35 | -281 | -1,405 | -1,967 | -2,251 | -9,835 | -11,255 | -15,757 | -78,785 | -632,531 | -3,162,655 | -4,427,717 | -22,138,585 |
Here are some more numbers to try:
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