A:
Positive:
1 x 21363652713 x 1643357941 x 5210647277 x 771251533 x 4008191447 x 1476413601 x 5932711357 x 18811
Negative:
-1 x -213636527-13 x -16433579-41 x -5210647-277 x -771251-533 x -400819-1447 x -147641-3601 x -59327-11357 x -18811
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 213,636,527, 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 | 213,636,527 | |
| -1 | -213,636,527 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 213,636,527.
Example:
1 x 213,636,527 = 213,636,527
and
-1 x -213,636,527 = 213,636,527
Notice both answers equal 213,636,527
With that explanation out of the way, let's continue. Next, we take the number 213,636,527 and divide it by 2:
213,636,527 ÷ 2 = 106,818,263.5
If the quotient is a whole number, then 2 and 106,818,263.5 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 | 213,636,527 | |
| -1 | -213,636,527 |
Now, we try dividing 213,636,527 by 3:
213,636,527 ÷ 3 = 71,212,175.6667
If the quotient is a whole number, then 3 and 71,212,175.6667 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 | 213,636,527 | |
| -1 | -213,636,527 |
Let's try dividing by 4:
213,636,527 ÷ 4 = 53,409,131.75
If the quotient is a whole number, then 4 and 53,409,131.75 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 | 213,636,527 | |
| -1 | 213,636,527 |
If you did it right, you will end up with this table:
| 1 | 13 | 41 | 277 | 533 | 1,447 | 3,601 | 11,357 | 18,811 | 59,327 | 147,641 | 400,819 | 771,251 | 5,210,647 | 16,433,579 | 213,636,527 |
| -1 | -13 | -41 | -277 | -533 | -1,447 | -3,601 | -11,357 | -18,811 | -59,327 | -147,641 | -400,819 | -771,251 | -5,210,647 | -16,433,579 | -213,636,527 |
Here are some more numbers to try:
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