A:
Positive:
1 x 22123352911 x 2011213917 x 13013737187 x 1183067277 x 7986773047 x 726074271 x 517994709 x 46981
Negative:
-1 x -221233529-11 x -20112139-17 x -13013737-187 x -1183067-277 x -798677-3047 x -72607-4271 x -51799-4709 x -46981
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 221,233,529, 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 | 221,233,529 | |
| -1 | -221,233,529 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,233,529.
Example:
1 x 221,233,529 = 221,233,529
and
-1 x -221,233,529 = 221,233,529
Notice both answers equal 221,233,529
With that explanation out of the way, let's continue. Next, we take the number 221,233,529 and divide it by 2:
221,233,529 ÷ 2 = 110,616,764.5
If the quotient is a whole number, then 2 and 110,616,764.5 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 | 221,233,529 | |
| -1 | -221,233,529 |
Now, we try dividing 221,233,529 by 3:
221,233,529 ÷ 3 = 73,744,509.6667
If the quotient is a whole number, then 3 and 73,744,509.6667 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 | 221,233,529 | |
| -1 | -221,233,529 |
Let's try dividing by 4:
221,233,529 ÷ 4 = 55,308,382.25
If the quotient is a whole number, then 4 and 55,308,382.25 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 | 221,233,529 | |
| -1 | 221,233,529 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 187 | 277 | 3,047 | 4,271 | 4,709 | 46,981 | 51,799 | 72,607 | 798,677 | 1,183,067 | 13,013,737 | 20,112,139 | 221,233,529 |
| -1 | -11 | -17 | -187 | -277 | -3,047 | -4,271 | -4,709 | -46,981 | -51,799 | -72,607 | -798,677 | -1,183,067 | -13,013,737 | -20,112,139 | -221,233,529 |
Here are some more numbers to try:
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