A:
Positive:
1 x 6414597 x 9163713 x 4934319 x 3376149 x 1309153 x 1210391 x 7049133 x 4823247 x 2597371 x 1729637 x 1007689 x 931
Negative:
-1 x -641459-7 x -91637-13 x -49343-19 x -33761-49 x -13091-53 x -12103-91 x -7049-133 x -4823-247 x -2597-371 x -1729-637 x -1007-689 x -931
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 641,459, 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 | 641,459 | |
| -1 | -641,459 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 641,459.
Example:
1 x 641,459 = 641,459
and
-1 x -641,459 = 641,459
Notice both answers equal 641,459
With that explanation out of the way, let's continue. Next, we take the number 641,459 and divide it by 2:
641,459 ÷ 2 = 320,729.5
If the quotient is a whole number, then 2 and 320,729.5 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 | 641,459 | |
| -1 | -641,459 |
Now, we try dividing 641,459 by 3:
641,459 ÷ 3 = 213,819.6667
If the quotient is a whole number, then 3 and 213,819.6667 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 | 641,459 | |
| -1 | -641,459 |
Let's try dividing by 4:
641,459 ÷ 4 = 160,364.75
If the quotient is a whole number, then 4 and 160,364.75 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 | 641,459 | |
| -1 | 641,459 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 19 | 49 | 53 | 91 | 133 | 247 | 371 | 637 | 689 | 931 | 1,007 | 1,729 | 2,597 | 4,823 | 7,049 | 12,103 | 13,091 | 33,761 | 49,343 | 91,637 | 641,459 |
| -1 | -7 | -13 | -19 | -49 | -53 | -91 | -133 | -247 | -371 | -637 | -689 | -931 | -1,007 | -1,729 | -2,597 | -4,823 | -7,049 | -12,103 | -13,091 | -33,761 | -49,343 | -91,637 | -641,459 |
Here are some more numbers to try:
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