A:
Positive:
1 x 25155137 x 35935911 x 22868313 x 19350149 x 5133777 x 3266991 x 27643143 x 17591359 x 7007539 x 4667637 x 39491001 x 2513
Negative:
-1 x -2515513-7 x -359359-11 x -228683-13 x -193501-49 x -51337-77 x -32669-91 x -27643-143 x -17591-359 x -7007-539 x -4667-637 x -3949-1001 x -2513
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 2,515,513, 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 | 2,515,513 | |
| -1 | -2,515,513 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,515,513.
Example:
1 x 2,515,513 = 2,515,513
and
-1 x -2,515,513 = 2,515,513
Notice both answers equal 2,515,513
With that explanation out of the way, let's continue. Next, we take the number 2,515,513 and divide it by 2:
2,515,513 ÷ 2 = 1,257,756.5
If the quotient is a whole number, then 2 and 1,257,756.5 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 | 2,515,513 | |
| -1 | -2,515,513 |
Now, we try dividing 2,515,513 by 3:
2,515,513 ÷ 3 = 838,504.3333
If the quotient is a whole number, then 3 and 838,504.3333 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 | 2,515,513 | |
| -1 | -2,515,513 |
Let's try dividing by 4:
2,515,513 ÷ 4 = 628,878.25
If the quotient is a whole number, then 4 and 628,878.25 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 | 2,515,513 | |
| -1 | 2,515,513 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 49 | 77 | 91 | 143 | 359 | 539 | 637 | 1,001 | 2,513 | 3,949 | 4,667 | 7,007 | 17,591 | 27,643 | 32,669 | 51,337 | 193,501 | 228,683 | 359,359 | 2,515,513 |
| -1 | -7 | -11 | -13 | -49 | -77 | -91 | -143 | -359 | -539 | -637 | -1,001 | -2,513 | -3,949 | -4,667 | -7,007 | -17,591 | -27,643 | -32,669 | -51,337 | -193,501 | -228,683 | -359,359 | -2,515,513 |
Here are some more numbers to try:
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