A:
Positive:
1 x 19748955 x 39497913 x 15191523 x 8586565 x 30383115 x 17173299 x 66051321 x 1495
Negative:
-1 x -1974895-5 x -394979-13 x -151915-23 x -85865-65 x -30383-115 x -17173-299 x -6605-1321 x -1495
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 1,974,895, 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 | 1,974,895 | |
| -1 | -1,974,895 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,974,895.
Example:
1 x 1,974,895 = 1,974,895
and
-1 x -1,974,895 = 1,974,895
Notice both answers equal 1,974,895
With that explanation out of the way, let's continue. Next, we take the number 1,974,895 and divide it by 2:
1,974,895 ÷ 2 = 987,447.5
If the quotient is a whole number, then 2 and 987,447.5 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 | 1,974,895 | |
| -1 | -1,974,895 |
Now, we try dividing 1,974,895 by 3:
1,974,895 ÷ 3 = 658,298.3333
If the quotient is a whole number, then 3 and 658,298.3333 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 | 1,974,895 | |
| -1 | -1,974,895 |
Let's try dividing by 4:
1,974,895 ÷ 4 = 493,723.75
If the quotient is a whole number, then 4 and 493,723.75 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 | 1,974,895 | |
| -1 | 1,974,895 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 23 | 65 | 115 | 299 | 1,321 | 1,495 | 6,605 | 17,173 | 30,383 | 85,865 | 151,915 | 394,979 | 1,974,895 |
| -1 | -5 | -13 | -23 | -65 | -115 | -299 | -1,321 | -1,495 | -6,605 | -17,173 | -30,383 | -85,865 | -151,915 | -394,979 | -1,974,895 |
Here are some more numbers to try:
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