A:
Positive:
1 x 14055613931 x 453406961 x 2304199239 x 588101311 x 4519491891 x 743297409 x 189719641 x 14579
Negative:
-1 x -140556139-31 x -4534069-61 x -2304199-239 x -588101-311 x -451949-1891 x -74329-7409 x -18971-9641 x -14579
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 140,556,139, 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 | 140,556,139 | |
| -1 | -140,556,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 140,556,139.
Example:
1 x 140,556,139 = 140,556,139
and
-1 x -140,556,139 = 140,556,139
Notice both answers equal 140,556,139
With that explanation out of the way, let's continue. Next, we take the number 140,556,139 and divide it by 2:
140,556,139 ÷ 2 = 70,278,069.5
If the quotient is a whole number, then 2 and 70,278,069.5 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 | 140,556,139 | |
| -1 | -140,556,139 |
Now, we try dividing 140,556,139 by 3:
140,556,139 ÷ 3 = 46,852,046.3333
If the quotient is a whole number, then 3 and 46,852,046.3333 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 | 140,556,139 | |
| -1 | -140,556,139 |
Let's try dividing by 4:
140,556,139 ÷ 4 = 35,139,034.75
If the quotient is a whole number, then 4 and 35,139,034.75 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 | 140,556,139 | |
| -1 | 140,556,139 |
If you did it right, you will end up with this table:
| 1 | 31 | 61 | 239 | 311 | 1,891 | 7,409 | 9,641 | 14,579 | 18,971 | 74,329 | 451,949 | 588,101 | 2,304,199 | 4,534,069 | 140,556,139 |
| -1 | -31 | -61 | -239 | -311 | -1,891 | -7,409 | -9,641 | -14,579 | -18,971 | -74,329 | -451,949 | -588,101 | -2,304,199 | -4,534,069 | -140,556,139 |
Here are some more numbers to try:
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