A:
Positive:
1 x 20970255 x 4194057 x 29957523 x 9117525 x 8388135 x 59915115 x 18235161 x 13025175 x 11983521 x 4025575 x 3647805 x 2605
Negative:
-1 x -2097025-5 x -419405-7 x -299575-23 x -91175-25 x -83881-35 x -59915-115 x -18235-161 x -13025-175 x -11983-521 x -4025-575 x -3647-805 x -2605
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 2,097,025, 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 | 2,097,025 | |
| -1 | -2,097,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,097,025.
Example:
1 x 2,097,025 = 2,097,025
and
-1 x -2,097,025 = 2,097,025
Notice both answers equal 2,097,025
With that explanation out of the way, let's continue. Next, we take the number 2,097,025 and divide it by 2:
2,097,025 ÷ 2 = 1,048,512.5
If the quotient is a whole number, then 2 and 1,048,512.5 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 | 2,097,025 | |
| -1 | -2,097,025 |
Now, we try dividing 2,097,025 by 3:
2,097,025 ÷ 3 = 699,008.3333
If the quotient is a whole number, then 3 and 699,008.3333 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 | 2,097,025 | |
| -1 | -2,097,025 |
Let's try dividing by 4:
2,097,025 ÷ 4 = 524,256.25
If the quotient is a whole number, then 4 and 524,256.25 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 | 2,097,025 | |
| -1 | 2,097,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 23 | 25 | 35 | 115 | 161 | 175 | 521 | 575 | 805 | 2,605 | 3,647 | 4,025 | 11,983 | 13,025 | 18,235 | 59,915 | 83,881 | 91,175 | 299,575 | 419,405 | 2,097,025 |
| -1 | -5 | -7 | -23 | -25 | -35 | -115 | -161 | -175 | -521 | -575 | -805 | -2,605 | -3,647 | -4,025 | -11,983 | -13,025 | -18,235 | -59,915 | -83,881 | -91,175 | -299,575 | -419,405 | -2,097,025 |
Here are some more numbers to try:
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