A:
Positive:
1 x 19142786919 x 1007515129 x 6600961103 x 1858523551 x 3474191957 x 978172987 x 640873373 x 56753
Negative:
-1 x -191427869-19 x -10075151-29 x -6600961-103 x -1858523-551 x -347419-1957 x -97817-2987 x -64087-3373 x -56753
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 191,427,869, 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 | 191,427,869 | |
| -1 | -191,427,869 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 191,427,869.
Example:
1 x 191,427,869 = 191,427,869
and
-1 x -191,427,869 = 191,427,869
Notice both answers equal 191,427,869
With that explanation out of the way, let's continue. Next, we take the number 191,427,869 and divide it by 2:
191,427,869 ÷ 2 = 95,713,934.5
If the quotient is a whole number, then 2 and 95,713,934.5 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 | 191,427,869 | |
| -1 | -191,427,869 |
Now, we try dividing 191,427,869 by 3:
191,427,869 ÷ 3 = 63,809,289.6667
If the quotient is a whole number, then 3 and 63,809,289.6667 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 | 191,427,869 | |
| -1 | -191,427,869 |
Let's try dividing by 4:
191,427,869 ÷ 4 = 47,856,967.25
If the quotient is a whole number, then 4 and 47,856,967.25 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 | 191,427,869 | |
| -1 | 191,427,869 |
If you did it right, you will end up with this table:
| 1 | 19 | 29 | 103 | 551 | 1,957 | 2,987 | 3,373 | 56,753 | 64,087 | 97,817 | 347,419 | 1,858,523 | 6,600,961 | 10,075,151 | 191,427,869 |
| -1 | -19 | -29 | -103 | -551 | -1,957 | -2,987 | -3,373 | -56,753 | -64,087 | -97,817 | -347,419 | -1,858,523 | -6,600,961 | -10,075,151 | -191,427,869 |
Here are some more numbers to try:
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