A:
Positive:
1 x 2071017655 x 4142035313 x 1593090537 x 559734565 x 3186181185 x 1119469481 x 4305652405 x 86113
Negative:
-1 x -207101765-5 x -41420353-13 x -15930905-37 x -5597345-65 x -3186181-185 x -1119469-481 x -430565-2405 x -86113
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 207,101,765, 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 | 207,101,765 | |
| -1 | -207,101,765 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 207,101,765.
Example:
1 x 207,101,765 = 207,101,765
and
-1 x -207,101,765 = 207,101,765
Notice both answers equal 207,101,765
With that explanation out of the way, let's continue. Next, we take the number 207,101,765 and divide it by 2:
207,101,765 ÷ 2 = 103,550,882.5
If the quotient is a whole number, then 2 and 103,550,882.5 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 | 207,101,765 | |
| -1 | -207,101,765 |
Now, we try dividing 207,101,765 by 3:
207,101,765 ÷ 3 = 69,033,921.6667
If the quotient is a whole number, then 3 and 69,033,921.6667 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 | 207,101,765 | |
| -1 | -207,101,765 |
Let's try dividing by 4:
207,101,765 ÷ 4 = 51,775,441.25
If the quotient is a whole number, then 4 and 51,775,441.25 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 | 207,101,765 | |
| -1 | 207,101,765 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 37 | 65 | 185 | 481 | 2,405 | 86,113 | 430,565 | 1,119,469 | 3,186,181 | 5,597,345 | 15,930,905 | 41,420,353 | 207,101,765 |
| -1 | -5 | -13 | -37 | -65 | -185 | -481 | -2,405 | -86,113 | -430,565 | -1,119,469 | -3,186,181 | -5,597,345 | -15,930,905 | -41,420,353 | -207,101,765 |
Here are some more numbers to try:
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