A:
Positive:
1 x 19073155 x 38146317 x 11219519 x 10038585 x 2243995 x 20077323 x 59051181 x 1615
Negative:
-1 x -1907315-5 x -381463-17 x -112195-19 x -100385-85 x -22439-95 x -20077-323 x -5905-1181 x -1615
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 1,907,315, 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 | 1,907,315 | |
| -1 | -1,907,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,907,315.
Example:
1 x 1,907,315 = 1,907,315
and
-1 x -1,907,315 = 1,907,315
Notice both answers equal 1,907,315
With that explanation out of the way, let's continue. Next, we take the number 1,907,315 and divide it by 2:
1,907,315 ÷ 2 = 953,657.5
If the quotient is a whole number, then 2 and 953,657.5 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 | 1,907,315 | |
| -1 | -1,907,315 |
Now, we try dividing 1,907,315 by 3:
1,907,315 ÷ 3 = 635,771.6667
If the quotient is a whole number, then 3 and 635,771.6667 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 | 1,907,315 | |
| -1 | -1,907,315 |
Let's try dividing by 4:
1,907,315 ÷ 4 = 476,828.75
If the quotient is a whole number, then 4 and 476,828.75 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 | 1,907,315 | |
| -1 | 1,907,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 19 | 85 | 95 | 323 | 1,181 | 1,615 | 5,905 | 20,077 | 22,439 | 100,385 | 112,195 | 381,463 | 1,907,315 |
| -1 | -5 | -17 | -19 | -85 | -95 | -323 | -1,181 | -1,615 | -5,905 | -20,077 | -22,439 | -100,385 | -112,195 | -381,463 | -1,907,315 |
Here are some more numbers to try:
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