A:
Positive:
1 x 6918613911 x 628964923 x 300809361 x 1134199253 x 273463671 x 1031091403 x 493134483 x 15433
Negative:
-1 x -69186139-11 x -6289649-23 x -3008093-61 x -1134199-253 x -273463-671 x -103109-1403 x -49313-4483 x -15433
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 69,186,139, 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 | 69,186,139 | |
| -1 | -69,186,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 69,186,139.
Example:
1 x 69,186,139 = 69,186,139
and
-1 x -69,186,139 = 69,186,139
Notice both answers equal 69,186,139
With that explanation out of the way, let's continue. Next, we take the number 69,186,139 and divide it by 2:
69,186,139 ÷ 2 = 34,593,069.5
If the quotient is a whole number, then 2 and 34,593,069.5 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 | 69,186,139 | |
| -1 | -69,186,139 |
Now, we try dividing 69,186,139 by 3:
69,186,139 ÷ 3 = 23,062,046.3333
If the quotient is a whole number, then 3 and 23,062,046.3333 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 | 69,186,139 | |
| -1 | -69,186,139 |
Let's try dividing by 4:
69,186,139 ÷ 4 = 17,296,534.75
If the quotient is a whole number, then 4 and 17,296,534.75 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 | 69,186,139 | |
| -1 | 69,186,139 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 61 | 253 | 671 | 1,403 | 4,483 | 15,433 | 49,313 | 103,109 | 273,463 | 1,134,199 | 3,008,093 | 6,289,649 | 69,186,139 |
| -1 | -11 | -23 | -61 | -253 | -671 | -1,403 | -4,483 | -15,433 | -49,313 | -103,109 | -273,463 | -1,134,199 | -3,008,093 | -6,289,649 | -69,186,139 |
Here are some more numbers to try:
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