A:
Positive:
1 x 254654155 x 509308319 x 134028531 x 82146595 x 268057155 x 164293589 x 432352945 x 8647
Negative:
-1 x -25465415-5 x -5093083-19 x -1340285-31 x -821465-95 x -268057-155 x -164293-589 x -43235-2945 x -8647
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 25,465,415, 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 | 25,465,415 | |
| -1 | -25,465,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,465,415.
Example:
1 x 25,465,415 = 25,465,415
and
-1 x -25,465,415 = 25,465,415
Notice both answers equal 25,465,415
With that explanation out of the way, let's continue. Next, we take the number 25,465,415 and divide it by 2:
25,465,415 ÷ 2 = 12,732,707.5
If the quotient is a whole number, then 2 and 12,732,707.5 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 | 25,465,415 | |
| -1 | -25,465,415 |
Now, we try dividing 25,465,415 by 3:
25,465,415 ÷ 3 = 8,488,471.6667
If the quotient is a whole number, then 3 and 8,488,471.6667 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 | 25,465,415 | |
| -1 | -25,465,415 |
Let's try dividing by 4:
25,465,415 ÷ 4 = 6,366,353.75
If the quotient is a whole number, then 4 and 6,366,353.75 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 | 25,465,415 | |
| -1 | 25,465,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 31 | 95 | 155 | 589 | 2,945 | 8,647 | 43,235 | 164,293 | 268,057 | 821,465 | 1,340,285 | 5,093,083 | 25,465,415 |
| -1 | -5 | -19 | -31 | -95 | -155 | -589 | -2,945 | -8,647 | -43,235 | -164,293 | -268,057 | -821,465 | -1,340,285 | -5,093,083 | -25,465,415 |
Here are some more numbers to try:
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