A:
Positive:
1 x 328774917 x 19339741 x 8018953 x 6203389 x 36941697 x 4717901 x 36491513 x 2173
Negative:
-1 x -3287749-17 x -193397-41 x -80189-53 x -62033-89 x -36941-697 x -4717-901 x -3649-1513 x -2173
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 3,287,749, 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 | 3,287,749 | |
| -1 | -3,287,749 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,287,749.
Example:
1 x 3,287,749 = 3,287,749
and
-1 x -3,287,749 = 3,287,749
Notice both answers equal 3,287,749
With that explanation out of the way, let's continue. Next, we take the number 3,287,749 and divide it by 2:
3,287,749 ÷ 2 = 1,643,874.5
If the quotient is a whole number, then 2 and 1,643,874.5 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 | 3,287,749 | |
| -1 | -3,287,749 |
Now, we try dividing 3,287,749 by 3:
3,287,749 ÷ 3 = 1,095,916.3333
If the quotient is a whole number, then 3 and 1,095,916.3333 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 | 3,287,749 | |
| -1 | -3,287,749 |
Let's try dividing by 4:
3,287,749 ÷ 4 = 821,937.25
If the quotient is a whole number, then 4 and 821,937.25 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 | 3,287,749 | |
| -1 | 3,287,749 |
If you did it right, you will end up with this table:
| 1 | 17 | 41 | 53 | 89 | 697 | 901 | 1,513 | 2,173 | 3,649 | 4,717 | 36,941 | 62,033 | 80,189 | 193,397 | 3,287,749 |
| -1 | -17 | -41 | -53 | -89 | -697 | -901 | -1,513 | -2,173 | -3,649 | -4,717 | -36,941 | -62,033 | -80,189 | -193,397 | -3,287,749 |
Here are some more numbers to try:
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