A:
Positive:
1 x 251690155 x 503380319 x 132468523 x 109430595 x 264937115 x 218861437 x 575952185 x 11519
Negative:
-1 x -25169015-5 x -5033803-19 x -1324685-23 x -1094305-95 x -264937-115 x -218861-437 x -57595-2185 x -11519
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 25,169,015, 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 | 25,169,015 | |
| -1 | -25,169,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,169,015.
Example:
1 x 25,169,015 = 25,169,015
and
-1 x -25,169,015 = 25,169,015
Notice both answers equal 25,169,015
With that explanation out of the way, let's continue. Next, we take the number 25,169,015 and divide it by 2:
25,169,015 ÷ 2 = 12,584,507.5
If the quotient is a whole number, then 2 and 12,584,507.5 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 | 25,169,015 | |
| -1 | -25,169,015 |
Now, we try dividing 25,169,015 by 3:
25,169,015 ÷ 3 = 8,389,671.6667
If the quotient is a whole number, then 3 and 8,389,671.6667 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 | 25,169,015 | |
| -1 | -25,169,015 |
Let's try dividing by 4:
25,169,015 ÷ 4 = 6,292,253.75
If the quotient is a whole number, then 4 and 6,292,253.75 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 | 25,169,015 | |
| -1 | 25,169,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 23 | 95 | 115 | 437 | 2,185 | 11,519 | 57,595 | 218,861 | 264,937 | 1,094,305 | 1,324,685 | 5,033,803 | 25,169,015 |
| -1 | -5 | -19 | -23 | -95 | -115 | -437 | -2,185 | -11,519 | -57,595 | -218,861 | -264,937 | -1,094,305 | -1,324,685 | -5,033,803 | -25,169,015 |
Here are some more numbers to try:
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