A:
Positive:
1 x 18616855 x 3723377 x 26595535 x 5319143 x 43295215 x 8659301 x 61851237 x 1505
Negative:
-1 x -1861685-5 x -372337-7 x -265955-35 x -53191-43 x -43295-215 x -8659-301 x -6185-1237 x -1505
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 1,861,685, 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 | 1,861,685 | |
| -1 | -1,861,685 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,861,685.
Example:
1 x 1,861,685 = 1,861,685
and
-1 x -1,861,685 = 1,861,685
Notice both answers equal 1,861,685
With that explanation out of the way, let's continue. Next, we take the number 1,861,685 and divide it by 2:
1,861,685 ÷ 2 = 930,842.5
If the quotient is a whole number, then 2 and 930,842.5 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 | 1,861,685 | |
| -1 | -1,861,685 |
Now, we try dividing 1,861,685 by 3:
1,861,685 ÷ 3 = 620,561.6667
If the quotient is a whole number, then 3 and 620,561.6667 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 | 1,861,685 | |
| -1 | -1,861,685 |
Let's try dividing by 4:
1,861,685 ÷ 4 = 465,421.25
If the quotient is a whole number, then 4 and 465,421.25 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 | 1,861,685 | |
| -1 | 1,861,685 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 43 | 215 | 301 | 1,237 | 1,505 | 6,185 | 8,659 | 43,295 | 53,191 | 265,955 | 372,337 | 1,861,685 |
| -1 | -5 | -7 | -35 | -43 | -215 | -301 | -1,237 | -1,505 | -6,185 | -8,659 | -43,295 | -53,191 | -265,955 | -372,337 | -1,861,685 |
Here are some more numbers to try:
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