A:
Positive:
1 x 2535640913 x 195049341 x 618449113 x 224393421 x 60229533 x 475731469 x 172614633 x 5473
Negative:
-1 x -25356409-13 x -1950493-41 x -618449-113 x -224393-421 x -60229-533 x -47573-1469 x -17261-4633 x -5473
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 25,356,409, 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 | 25,356,409 | |
| -1 | -25,356,409 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,356,409.
Example:
1 x 25,356,409 = 25,356,409
and
-1 x -25,356,409 = 25,356,409
Notice both answers equal 25,356,409
With that explanation out of the way, let's continue. Next, we take the number 25,356,409 and divide it by 2:
25,356,409 ÷ 2 = 12,678,204.5
If the quotient is a whole number, then 2 and 12,678,204.5 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 | 25,356,409 | |
| -1 | -25,356,409 |
Now, we try dividing 25,356,409 by 3:
25,356,409 ÷ 3 = 8,452,136.3333
If the quotient is a whole number, then 3 and 8,452,136.3333 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 | 25,356,409 | |
| -1 | -25,356,409 |
Let's try dividing by 4:
25,356,409 ÷ 4 = 6,339,102.25
If the quotient is a whole number, then 4 and 6,339,102.25 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 | 25,356,409 | |
| -1 | 25,356,409 |
If you did it right, you will end up with this table:
| 1 | 13 | 41 | 113 | 421 | 533 | 1,469 | 4,633 | 5,473 | 17,261 | 47,573 | 60,229 | 224,393 | 618,449 | 1,950,493 | 25,356,409 |
| -1 | -13 | -41 | -113 | -421 | -533 | -1,469 | -4,633 | -5,473 | -17,261 | -47,573 | -60,229 | -224,393 | -618,449 | -1,950,493 | -25,356,409 |
Here are some more numbers to try:
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