A:
Positive:
1 x 2213240055 x 442648017 x 3161771535 x 6323543839 x 2637954195 x 527595873 x 376857537 x 29365
Negative:
-1 x -221324005-5 x -44264801-7 x -31617715-35 x -6323543-839 x -263795-4195 x -52759-5873 x -37685-7537 x -29365
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 221,324,005, 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 | 221,324,005 | |
| -1 | -221,324,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,324,005.
Example:
1 x 221,324,005 = 221,324,005
and
-1 x -221,324,005 = 221,324,005
Notice both answers equal 221,324,005
With that explanation out of the way, let's continue. Next, we take the number 221,324,005 and divide it by 2:
221,324,005 ÷ 2 = 110,662,002.5
If the quotient is a whole number, then 2 and 110,662,002.5 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 | 221,324,005 | |
| -1 | -221,324,005 |
Now, we try dividing 221,324,005 by 3:
221,324,005 ÷ 3 = 73,774,668.3333
If the quotient is a whole number, then 3 and 73,774,668.3333 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 | 221,324,005 | |
| -1 | -221,324,005 |
Let's try dividing by 4:
221,324,005 ÷ 4 = 55,331,001.25
If the quotient is a whole number, then 4 and 55,331,001.25 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 | 221,324,005 | |
| -1 | 221,324,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 839 | 4,195 | 5,873 | 7,537 | 29,365 | 37,685 | 52,759 | 263,795 | 6,323,543 | 31,617,715 | 44,264,801 | 221,324,005 |
| -1 | -5 | -7 | -35 | -839 | -4,195 | -5,873 | -7,537 | -29,365 | -37,685 | -52,759 | -263,795 | -6,323,543 | -31,617,715 | -44,264,801 | -221,324,005 |
Here are some more numbers to try:
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