A:
Positive:
1 x 18988455 x 37976913 x 14606565 x 29213131 x 14495223 x 8515655 x 28991115 x 1703
Negative:
-1 x -1898845-5 x -379769-13 x -146065-65 x -29213-131 x -14495-223 x -8515-655 x -2899-1115 x -1703
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 1,898,845, 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 | 1,898,845 | |
| -1 | -1,898,845 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,898,845.
Example:
1 x 1,898,845 = 1,898,845
and
-1 x -1,898,845 = 1,898,845
Notice both answers equal 1,898,845
With that explanation out of the way, let's continue. Next, we take the number 1,898,845 and divide it by 2:
1,898,845 ÷ 2 = 949,422.5
If the quotient is a whole number, then 2 and 949,422.5 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 | 1,898,845 | |
| -1 | -1,898,845 |
Now, we try dividing 1,898,845 by 3:
1,898,845 ÷ 3 = 632,948.3333
If the quotient is a whole number, then 3 and 632,948.3333 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 | 1,898,845 | |
| -1 | -1,898,845 |
Let's try dividing by 4:
1,898,845 ÷ 4 = 474,711.25
If the quotient is a whole number, then 4 and 474,711.25 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 | 1,898,845 | |
| -1 | 1,898,845 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 131 | 223 | 655 | 1,115 | 1,703 | 2,899 | 8,515 | 14,495 | 29,213 | 146,065 | 379,769 | 1,898,845 |
| -1 | -5 | -13 | -65 | -131 | -223 | -655 | -1,115 | -1,703 | -2,899 | -8,515 | -14,495 | -29,213 | -146,065 | -379,769 | -1,898,845 |
Here are some more numbers to try:
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