A:
Positive:
1 x 26388255 x 5277657 x 37697517 x 15522525 x 10555335 x 7539585 x 31045119 x 22175175 x 15079425 x 6209595 x 4435887 x 2975
Negative:
-1 x -2638825-5 x -527765-7 x -376975-17 x -155225-25 x -105553-35 x -75395-85 x -31045-119 x -22175-175 x -15079-425 x -6209-595 x -4435-887 x -2975
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 2,638,825, 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 | 2,638,825 | |
| -1 | -2,638,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,638,825.
Example:
1 x 2,638,825 = 2,638,825
and
-1 x -2,638,825 = 2,638,825
Notice both answers equal 2,638,825
With that explanation out of the way, let's continue. Next, we take the number 2,638,825 and divide it by 2:
2,638,825 ÷ 2 = 1,319,412.5
If the quotient is a whole number, then 2 and 1,319,412.5 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 | 2,638,825 | |
| -1 | -2,638,825 |
Now, we try dividing 2,638,825 by 3:
2,638,825 ÷ 3 = 879,608.3333
If the quotient is a whole number, then 3 and 879,608.3333 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 | 2,638,825 | |
| -1 | -2,638,825 |
Let's try dividing by 4:
2,638,825 ÷ 4 = 659,706.25
If the quotient is a whole number, then 4 and 659,706.25 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 | 2,638,825 | |
| -1 | 2,638,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 17 | 25 | 35 | 85 | 119 | 175 | 425 | 595 | 887 | 2,975 | 4,435 | 6,209 | 15,079 | 22,175 | 31,045 | 75,395 | 105,553 | 155,225 | 376,975 | 527,765 | 2,638,825 |
| -1 | -5 | -7 | -17 | -25 | -35 | -85 | -119 | -175 | -425 | -595 | -887 | -2,975 | -4,435 | -6,209 | -15,079 | -22,175 | -31,045 | -75,395 | -105,553 | -155,225 | -376,975 | -527,765 | -2,638,825 |
Here are some more numbers to try:
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