A:
Positive:
1 x 254346477 x 363352153 x 479899179 x 142093371 x 68557383 x 664091253 x 202992681 x 9487
Negative:
-1 x -25434647-7 x -3633521-53 x -479899-179 x -142093-371 x -68557-383 x -66409-1253 x -20299-2681 x -9487
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 25,434,647, 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 | 25,434,647 | |
| -1 | -25,434,647 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,434,647.
Example:
1 x 25,434,647 = 25,434,647
and
-1 x -25,434,647 = 25,434,647
Notice both answers equal 25,434,647
With that explanation out of the way, let's continue. Next, we take the number 25,434,647 and divide it by 2:
25,434,647 ÷ 2 = 12,717,323.5
If the quotient is a whole number, then 2 and 12,717,323.5 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 | 25,434,647 | |
| -1 | -25,434,647 |
Now, we try dividing 25,434,647 by 3:
25,434,647 ÷ 3 = 8,478,215.6667
If the quotient is a whole number, then 3 and 8,478,215.6667 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 | 25,434,647 | |
| -1 | -25,434,647 |
Let's try dividing by 4:
25,434,647 ÷ 4 = 6,358,661.75
If the quotient is a whole number, then 4 and 6,358,661.75 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 | 25,434,647 | |
| -1 | 25,434,647 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 179 | 371 | 383 | 1,253 | 2,681 | 9,487 | 20,299 | 66,409 | 68,557 | 142,093 | 479,899 | 3,633,521 | 25,434,647 |
| -1 | -7 | -53 | -179 | -371 | -383 | -1,253 | -2,681 | -9,487 | -20,299 | -66,409 | -68,557 | -142,093 | -479,899 | -3,633,521 | -25,434,647 |
Here are some more numbers to try:
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