A:
Positive:
1 x 21227055 x 42454113 x 16328517 x 12486565 x 3265785 x 24973113 x 18785221 x 9605289 x 7345565 x 37571105 x 19211445 x 1469
Negative:
-1 x -2122705-5 x -424541-13 x -163285-17 x -124865-65 x -32657-85 x -24973-113 x -18785-221 x -9605-289 x -7345-565 x -3757-1105 x -1921-1445 x -1469
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 2,122,705, 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 | 2,122,705 | |
| -1 | -2,122,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,122,705.
Example:
1 x 2,122,705 = 2,122,705
and
-1 x -2,122,705 = 2,122,705
Notice both answers equal 2,122,705
With that explanation out of the way, let's continue. Next, we take the number 2,122,705 and divide it by 2:
2,122,705 ÷ 2 = 1,061,352.5
If the quotient is a whole number, then 2 and 1,061,352.5 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 | 2,122,705 | |
| -1 | -2,122,705 |
Now, we try dividing 2,122,705 by 3:
2,122,705 ÷ 3 = 707,568.3333
If the quotient is a whole number, then 3 and 707,568.3333 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 | 2,122,705 | |
| -1 | -2,122,705 |
Let's try dividing by 4:
2,122,705 ÷ 4 = 530,676.25
If the quotient is a whole number, then 4 and 530,676.25 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 | 2,122,705 | |
| -1 | 2,122,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 17 | 65 | 85 | 113 | 221 | 289 | 565 | 1,105 | 1,445 | 1,469 | 1,921 | 3,757 | 7,345 | 9,605 | 18,785 | 24,973 | 32,657 | 124,865 | 163,285 | 424,541 | 2,122,705 |
| -1 | -5 | -13 | -17 | -65 | -85 | -113 | -221 | -289 | -565 | -1,105 | -1,445 | -1,469 | -1,921 | -3,757 | -7,345 | -9,605 | -18,785 | -24,973 | -32,657 | -124,865 | -163,285 | -424,541 | -2,122,705 |
Here are some more numbers to try:
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