A:
Positive:
1 x 2185366711 x 198669719 x 115019331 x 704957209 x 104563341 x 64087589 x 371033373 x 6479
Negative:
-1 x -21853667-11 x -1986697-19 x -1150193-31 x -704957-209 x -104563-341 x -64087-589 x -37103-3373 x -6479
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 21,853,667, 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 | 21,853,667 | |
| -1 | -21,853,667 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,853,667.
Example:
1 x 21,853,667 = 21,853,667
and
-1 x -21,853,667 = 21,853,667
Notice both answers equal 21,853,667
With that explanation out of the way, let's continue. Next, we take the number 21,853,667 and divide it by 2:
21,853,667 ÷ 2 = 10,926,833.5
If the quotient is a whole number, then 2 and 10,926,833.5 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 | 21,853,667 | |
| -1 | -21,853,667 |
Now, we try dividing 21,853,667 by 3:
21,853,667 ÷ 3 = 7,284,555.6667
If the quotient is a whole number, then 3 and 7,284,555.6667 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 | 21,853,667 | |
| -1 | -21,853,667 |
Let's try dividing by 4:
21,853,667 ÷ 4 = 5,463,416.75
If the quotient is a whole number, then 4 and 5,463,416.75 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 | 21,853,667 | |
| -1 | 21,853,667 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 31 | 209 | 341 | 589 | 3,373 | 6,479 | 37,103 | 64,087 | 104,563 | 704,957 | 1,150,193 | 1,986,697 | 21,853,667 |
| -1 | -11 | -19 | -31 | -209 | -341 | -589 | -3,373 | -6,479 | -37,103 | -64,087 | -104,563 | -704,957 | -1,150,193 | -1,986,697 | -21,853,667 |
Here are some more numbers to try:
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