A:
Positive:
1 x 900450537 x 1286357943 x 2094071293 x 307321301 x 2991531021 x 881932051 x 439037147 x 12599
Negative:
-1 x -90045053-7 x -12863579-43 x -2094071-293 x -307321-301 x -299153-1021 x -88193-2051 x -43903-7147 x -12599
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 90,045,053, 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 | 90,045,053 | |
| -1 | -90,045,053 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 90,045,053.
Example:
1 x 90,045,053 = 90,045,053
and
-1 x -90,045,053 = 90,045,053
Notice both answers equal 90,045,053
With that explanation out of the way, let's continue. Next, we take the number 90,045,053 and divide it by 2:
90,045,053 ÷ 2 = 45,022,526.5
If the quotient is a whole number, then 2 and 45,022,526.5 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 | 90,045,053 | |
| -1 | -90,045,053 |
Now, we try dividing 90,045,053 by 3:
90,045,053 ÷ 3 = 30,015,017.6667
If the quotient is a whole number, then 3 and 30,015,017.6667 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 | 90,045,053 | |
| -1 | -90,045,053 |
Let's try dividing by 4:
90,045,053 ÷ 4 = 22,511,263.25
If the quotient is a whole number, then 4 and 22,511,263.25 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 | 90,045,053 | |
| -1 | 90,045,053 |
If you did it right, you will end up with this table:
| 1 | 7 | 43 | 293 | 301 | 1,021 | 2,051 | 7,147 | 12,599 | 43,903 | 88,193 | 299,153 | 307,321 | 2,094,071 | 12,863,579 | 90,045,053 |
| -1 | -7 | -43 | -293 | -301 | -1,021 | -2,051 | -7,147 | -12,599 | -43,903 | -88,193 | -299,153 | -307,321 | -2,094,071 | -12,863,579 | -90,045,053 |
Here are some more numbers to try:
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