A:
Positive:
1 x 221470155 x 442940311 x 201336555 x 402673281 x 788151405 x 157631433 x 154553091 x 7165
Negative:
-1 x -22147015-5 x -4429403-11 x -2013365-55 x -402673-281 x -78815-1405 x -15763-1433 x -15455-3091 x -7165
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 22,147,015, 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 | 22,147,015 | |
| -1 | -22,147,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 22,147,015.
Example:
1 x 22,147,015 = 22,147,015
and
-1 x -22,147,015 = 22,147,015
Notice both answers equal 22,147,015
With that explanation out of the way, let's continue. Next, we take the number 22,147,015 and divide it by 2:
22,147,015 ÷ 2 = 11,073,507.5
If the quotient is a whole number, then 2 and 11,073,507.5 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 | 22,147,015 | |
| -1 | -22,147,015 |
Now, we try dividing 22,147,015 by 3:
22,147,015 ÷ 3 = 7,382,338.3333
If the quotient is a whole number, then 3 and 7,382,338.3333 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 | 22,147,015 | |
| -1 | -22,147,015 |
Let's try dividing by 4:
22,147,015 ÷ 4 = 5,536,753.75
If the quotient is a whole number, then 4 and 5,536,753.75 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 | 22,147,015 | |
| -1 | 22,147,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 281 | 1,405 | 1,433 | 3,091 | 7,165 | 15,455 | 15,763 | 78,815 | 402,673 | 2,013,365 | 4,429,403 | 22,147,015 |
| -1 | -5 | -11 | -55 | -281 | -1,405 | -1,433 | -3,091 | -7,165 | -15,455 | -15,763 | -78,815 | -402,673 | -2,013,365 | -4,429,403 | -22,147,015 |
Here are some more numbers to try:
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