A:
Positive:
1 x 128580255 x 257160525 x 51432131 x 41477547 x 273575155 x 82955235 x 54715353 x 36425775 x 165911175 x 109431457 x 88251765 x 7285
Negative:
-1 x -12858025-5 x -2571605-25 x -514321-31 x -414775-47 x -273575-155 x -82955-235 x -54715-353 x -36425-775 x -16591-1175 x -10943-1457 x -8825-1765 x -7285
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 12,858,025, 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 | 12,858,025 | |
| -1 | -12,858,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,858,025.
Example:
1 x 12,858,025 = 12,858,025
and
-1 x -12,858,025 = 12,858,025
Notice both answers equal 12,858,025
With that explanation out of the way, let's continue. Next, we take the number 12,858,025 and divide it by 2:
12,858,025 ÷ 2 = 6,429,012.5
If the quotient is a whole number, then 2 and 6,429,012.5 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 | 12,858,025 | |
| -1 | -12,858,025 |
Now, we try dividing 12,858,025 by 3:
12,858,025 ÷ 3 = 4,286,008.3333
If the quotient is a whole number, then 3 and 4,286,008.3333 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 | 12,858,025 | |
| -1 | -12,858,025 |
Let's try dividing by 4:
12,858,025 ÷ 4 = 3,214,506.25
If the quotient is a whole number, then 4 and 3,214,506.25 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 | 12,858,025 | |
| -1 | 12,858,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 31 | 47 | 155 | 235 | 353 | 775 | 1,175 | 1,457 | 1,765 | 7,285 | 8,825 | 10,943 | 16,591 | 36,425 | 54,715 | 82,955 | 273,575 | 414,775 | 514,321 | 2,571,605 | 12,858,025 |
| -1 | -5 | -25 | -31 | -47 | -155 | -235 | -353 | -775 | -1,175 | -1,457 | -1,765 | -7,285 | -8,825 | -10,943 | -16,591 | -36,425 | -54,715 | -82,955 | -273,575 | -414,775 | -514,321 | -2,571,605 | -12,858,025 |
Here are some more numbers to try:
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