A:
Positive:
1 x 511756217 x 731080323 x 222502747 x 1088843161 x 317861329 x 1555491081 x 473416763 x 7567
Negative:
-1 x -51175621-7 x -7310803-23 x -2225027-47 x -1088843-161 x -317861-329 x -155549-1081 x -47341-6763 x -7567
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 51,175,621, 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 | 51,175,621 | |
| -1 | -51,175,621 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,175,621.
Example:
1 x 51,175,621 = 51,175,621
and
-1 x -51,175,621 = 51,175,621
Notice both answers equal 51,175,621
With that explanation out of the way, let's continue. Next, we take the number 51,175,621 and divide it by 2:
51,175,621 ÷ 2 = 25,587,810.5
If the quotient is a whole number, then 2 and 25,587,810.5 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 | 51,175,621 | |
| -1 | -51,175,621 |
Now, we try dividing 51,175,621 by 3:
51,175,621 ÷ 3 = 17,058,540.3333
If the quotient is a whole number, then 3 and 17,058,540.3333 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 | 51,175,621 | |
| -1 | -51,175,621 |
Let's try dividing by 4:
51,175,621 ÷ 4 = 12,793,905.25
If the quotient is a whole number, then 4 and 12,793,905.25 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 | 51,175,621 | |
| -1 | 51,175,621 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 47 | 161 | 329 | 1,081 | 6,763 | 7,567 | 47,341 | 155,549 | 317,861 | 1,088,843 | 2,225,027 | 7,310,803 | 51,175,621 |
| -1 | -7 | -23 | -47 | -161 | -329 | -1,081 | -6,763 | -7,567 | -47,341 | -155,549 | -317,861 | -1,088,843 | -2,225,027 | -7,310,803 | -51,175,621 |
Here are some more numbers to try:
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