A:
Positive:
1 x 39192255 x 78384519 x 20627525 x 15676937 x 10592595 x 41255185 x 21185223 x 17575475 x 8251703 x 5575925 x 42371115 x 3515
Negative:
-1 x -3919225-5 x -783845-19 x -206275-25 x -156769-37 x -105925-95 x -41255-185 x -21185-223 x -17575-475 x -8251-703 x -5575-925 x -4237-1115 x -3515
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 3,919,225, 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 | 3,919,225 | |
| -1 | -3,919,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,919,225.
Example:
1 x 3,919,225 = 3,919,225
and
-1 x -3,919,225 = 3,919,225
Notice both answers equal 3,919,225
With that explanation out of the way, let's continue. Next, we take the number 3,919,225 and divide it by 2:
3,919,225 ÷ 2 = 1,959,612.5
If the quotient is a whole number, then 2 and 1,959,612.5 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 | 3,919,225 | |
| -1 | -3,919,225 |
Now, we try dividing 3,919,225 by 3:
3,919,225 ÷ 3 = 1,306,408.3333
If the quotient is a whole number, then 3 and 1,306,408.3333 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 | 3,919,225 | |
| -1 | -3,919,225 |
Let's try dividing by 4:
3,919,225 ÷ 4 = 979,806.25
If the quotient is a whole number, then 4 and 979,806.25 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 | 3,919,225 | |
| -1 | 3,919,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 37 | 95 | 185 | 223 | 475 | 703 | 925 | 1,115 | 3,515 | 4,237 | 5,575 | 8,251 | 17,575 | 21,185 | 41,255 | 105,925 | 156,769 | 206,275 | 783,845 | 3,919,225 |
| -1 | -5 | -19 | -25 | -37 | -95 | -185 | -223 | -475 | -703 | -925 | -1,115 | -3,515 | -4,237 | -5,575 | -8,251 | -17,575 | -21,185 | -41,255 | -105,925 | -156,769 | -206,275 | -783,845 | -3,919,225 |
Here are some more numbers to try:
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