A:
Positive:
1 x 23872255 x 47744517 x 14042525 x 9548941 x 5822585 x 28085137 x 17425205 x 11645425 x 5617685 x 3485697 x 34251025 x 2329
Negative:
-1 x -2387225-5 x -477445-17 x -140425-25 x -95489-41 x -58225-85 x -28085-137 x -17425-205 x -11645-425 x -5617-685 x -3485-697 x -3425-1025 x -2329
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 2,387,225, 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 | 2,387,225 | |
| -1 | -2,387,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,387,225.
Example:
1 x 2,387,225 = 2,387,225
and
-1 x -2,387,225 = 2,387,225
Notice both answers equal 2,387,225
With that explanation out of the way, let's continue. Next, we take the number 2,387,225 and divide it by 2:
2,387,225 ÷ 2 = 1,193,612.5
If the quotient is a whole number, then 2 and 1,193,612.5 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 | 2,387,225 | |
| -1 | -2,387,225 |
Now, we try dividing 2,387,225 by 3:
2,387,225 ÷ 3 = 795,741.6667
If the quotient is a whole number, then 3 and 795,741.6667 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 | 2,387,225 | |
| -1 | -2,387,225 |
Let's try dividing by 4:
2,387,225 ÷ 4 = 596,806.25
If the quotient is a whole number, then 4 and 596,806.25 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 | 2,387,225 | |
| -1 | 2,387,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 25 | 41 | 85 | 137 | 205 | 425 | 685 | 697 | 1,025 | 2,329 | 3,425 | 3,485 | 5,617 | 11,645 | 17,425 | 28,085 | 58,225 | 95,489 | 140,425 | 477,445 | 2,387,225 |
| -1 | -5 | -17 | -25 | -41 | -85 | -137 | -205 | -425 | -685 | -697 | -1,025 | -2,329 | -3,425 | -3,485 | -5,617 | -11,645 | -17,425 | -28,085 | -58,225 | -95,489 | -140,425 | -477,445 | -2,387,225 |
Here are some more numbers to try:
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