A:
Positive:
1 x 512151017 x 731644317 x 301265347 x 1089683119 x 430379329 x 155669799 x 640995593 x 9157
Negative:
-1 x -51215101-7 x -7316443-17 x -3012653-47 x -1089683-119 x -430379-329 x -155669-799 x -64099-5593 x -9157
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 51,215,101, 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 | 51,215,101 | |
| -1 | -51,215,101 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,215,101.
Example:
1 x 51,215,101 = 51,215,101
and
-1 x -51,215,101 = 51,215,101
Notice both answers equal 51,215,101
With that explanation out of the way, let's continue. Next, we take the number 51,215,101 and divide it by 2:
51,215,101 ÷ 2 = 25,607,550.5
If the quotient is a whole number, then 2 and 25,607,550.5 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 | 51,215,101 | |
| -1 | -51,215,101 |
Now, we try dividing 51,215,101 by 3:
51,215,101 ÷ 3 = 17,071,700.3333
If the quotient is a whole number, then 3 and 17,071,700.3333 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 | 51,215,101 | |
| -1 | -51,215,101 |
Let's try dividing by 4:
51,215,101 ÷ 4 = 12,803,775.25
If the quotient is a whole number, then 4 and 12,803,775.25 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 | 51,215,101 | |
| -1 | 51,215,101 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 47 | 119 | 329 | 799 | 5,593 | 9,157 | 64,099 | 155,669 | 430,379 | 1,089,683 | 3,012,653 | 7,316,443 | 51,215,101 |
| -1 | -7 | -17 | -47 | -119 | -329 | -799 | -5,593 | -9,157 | -64,099 | -155,669 | -430,379 | -1,089,683 | -3,012,653 | -7,316,443 | -51,215,101 |
Here are some more numbers to try:
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