A:
Positive:
1 x 12575717 x 17965323 x 5467773 x 17227107 x 11753161 x 7811511 x 2461749 x 1679
Negative:
-1 x -1257571-7 x -179653-23 x -54677-73 x -17227-107 x -11753-161 x -7811-511 x -2461-749 x -1679
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 1,257,571, 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 | 1,257,571 | |
| -1 | -1,257,571 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,257,571.
Example:
1 x 1,257,571 = 1,257,571
and
-1 x -1,257,571 = 1,257,571
Notice both answers equal 1,257,571
With that explanation out of the way, let's continue. Next, we take the number 1,257,571 and divide it by 2:
1,257,571 ÷ 2 = 628,785.5
If the quotient is a whole number, then 2 and 628,785.5 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 | 1,257,571 | |
| -1 | -1,257,571 |
Now, we try dividing 1,257,571 by 3:
1,257,571 ÷ 3 = 419,190.3333
If the quotient is a whole number, then 3 and 419,190.3333 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 | 1,257,571 | |
| -1 | -1,257,571 |
Let's try dividing by 4:
1,257,571 ÷ 4 = 314,392.75
If the quotient is a whole number, then 4 and 314,392.75 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 | 1,257,571 | |
| -1 | 1,257,571 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 73 | 107 | 161 | 511 | 749 | 1,679 | 2,461 | 7,811 | 11,753 | 17,227 | 54,677 | 179,653 | 1,257,571 |
| -1 | -7 | -23 | -73 | -107 | -161 | -511 | -749 | -1,679 | -2,461 | -7,811 | -11,753 | -17,227 | -54,677 | -179,653 | -1,257,571 |
Here are some more numbers to try:
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