A:
Positive:
1 x 15631497 x 22330719 x 8227123 x 6796349 x 3190173 x 21413133 x 11753161 x 9709437 x 3577511 x 3059931 x 16791127 x 1387
Negative:
-1 x -1563149-7 x -223307-19 x -82271-23 x -67963-49 x -31901-73 x -21413-133 x -11753-161 x -9709-437 x -3577-511 x -3059-931 x -1679-1127 x -1387
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 1,563,149, 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 | 1,563,149 | |
| -1 | -1,563,149 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,563,149.
Example:
1 x 1,563,149 = 1,563,149
and
-1 x -1,563,149 = 1,563,149
Notice both answers equal 1,563,149
With that explanation out of the way, let's continue. Next, we take the number 1,563,149 and divide it by 2:
1,563,149 ÷ 2 = 781,574.5
If the quotient is a whole number, then 2 and 781,574.5 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 | 1,563,149 | |
| -1 | -1,563,149 |
Now, we try dividing 1,563,149 by 3:
1,563,149 ÷ 3 = 521,049.6667
If the quotient is a whole number, then 3 and 521,049.6667 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 | 1,563,149 | |
| -1 | -1,563,149 |
Let's try dividing by 4:
1,563,149 ÷ 4 = 390,787.25
If the quotient is a whole number, then 4 and 390,787.25 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 | 1,563,149 | |
| -1 | 1,563,149 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 23 | 49 | 73 | 133 | 161 | 437 | 511 | 931 | 1,127 | 1,387 | 1,679 | 3,059 | 3,577 | 9,709 | 11,753 | 21,413 | 31,901 | 67,963 | 82,271 | 223,307 | 1,563,149 |
| -1 | -7 | -19 | -23 | -49 | -73 | -133 | -161 | -437 | -511 | -931 | -1,127 | -1,387 | -1,679 | -3,059 | -3,577 | -9,709 | -11,753 | -21,413 | -31,901 | -67,963 | -82,271 | -223,307 | -1,563,149 |
Here are some more numbers to try:
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