A:
Positive:
1 x 231558717 x 13621119 x 12187367 x 34561107 x 21641323 x 71691139 x 20331273 x 1819
Negative:
-1 x -2315587-17 x -136211-19 x -121873-67 x -34561-107 x -21641-323 x -7169-1139 x -2033-1273 x -1819
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 2,315,587, 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 | 2,315,587 | |
| -1 | -2,315,587 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,315,587.
Example:
1 x 2,315,587 = 2,315,587
and
-1 x -2,315,587 = 2,315,587
Notice both answers equal 2,315,587
With that explanation out of the way, let's continue. Next, we take the number 2,315,587 and divide it by 2:
2,315,587 ÷ 2 = 1,157,793.5
If the quotient is a whole number, then 2 and 1,157,793.5 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 | 2,315,587 | |
| -1 | -2,315,587 |
Now, we try dividing 2,315,587 by 3:
2,315,587 ÷ 3 = 771,862.3333
If the quotient is a whole number, then 3 and 771,862.3333 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 | 2,315,587 | |
| -1 | -2,315,587 |
Let's try dividing by 4:
2,315,587 ÷ 4 = 578,896.75
If the quotient is a whole number, then 4 and 578,896.75 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 | 2,315,587 | |
| -1 | 2,315,587 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 67 | 107 | 323 | 1,139 | 1,273 | 1,819 | 2,033 | 7,169 | 21,641 | 34,561 | 121,873 | 136,211 | 2,315,587 |
| -1 | -17 | -19 | -67 | -107 | -323 | -1,139 | -1,273 | -1,819 | -2,033 | -7,169 | -21,641 | -34,561 | -121,873 | -136,211 | -2,315,587 |
Here are some more numbers to try:
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