A:
Positive:
1 x 16356055313 x 1258158117 x 9621209221 x 740093643 x 2543711151 x 1421038359 x 1956710931 x 14963
Negative:
-1 x -163560553-13 x -12581581-17 x -9621209-221 x -740093-643 x -254371-1151 x -142103-8359 x -19567-10931 x -14963
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 163,560,553, 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 | 163,560,553 | |
| -1 | -163,560,553 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 163,560,553.
Example:
1 x 163,560,553 = 163,560,553
and
-1 x -163,560,553 = 163,560,553
Notice both answers equal 163,560,553
With that explanation out of the way, let's continue. Next, we take the number 163,560,553 and divide it by 2:
163,560,553 ÷ 2 = 81,780,276.5
If the quotient is a whole number, then 2 and 81,780,276.5 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 | 163,560,553 | |
| -1 | -163,560,553 |
Now, we try dividing 163,560,553 by 3:
163,560,553 ÷ 3 = 54,520,184.3333
If the quotient is a whole number, then 3 and 54,520,184.3333 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 | 163,560,553 | |
| -1 | -163,560,553 |
Let's try dividing by 4:
163,560,553 ÷ 4 = 40,890,138.25
If the quotient is a whole number, then 4 and 40,890,138.25 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 | 163,560,553 | |
| -1 | 163,560,553 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 221 | 643 | 1,151 | 8,359 | 10,931 | 14,963 | 19,567 | 142,103 | 254,371 | 740,093 | 9,621,209 | 12,581,581 | 163,560,553 |
| -1 | -13 | -17 | -221 | -643 | -1,151 | -8,359 | -10,931 | -14,963 | -19,567 | -142,103 | -254,371 | -740,093 | -9,621,209 | -12,581,581 | -163,560,553 |
Here are some more numbers to try:
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