A:
Positive:
1 x 901135455 x 18022709113 x 797465349 x 258205457 x 197185565 x 1594931745 x 516412285 x 39437
Negative:
-1 x -90113545-5 x -18022709-113 x -797465-349 x -258205-457 x -197185-565 x -159493-1745 x -51641-2285 x -39437
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 90,113,545, 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 | 90,113,545 | |
| -1 | -90,113,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 90,113,545.
Example:
1 x 90,113,545 = 90,113,545
and
-1 x -90,113,545 = 90,113,545
Notice both answers equal 90,113,545
With that explanation out of the way, let's continue. Next, we take the number 90,113,545 and divide it by 2:
90,113,545 ÷ 2 = 45,056,772.5
If the quotient is a whole number, then 2 and 45,056,772.5 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 | 90,113,545 | |
| -1 | -90,113,545 |
Now, we try dividing 90,113,545 by 3:
90,113,545 ÷ 3 = 30,037,848.3333
If the quotient is a whole number, then 3 and 30,037,848.3333 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 | 90,113,545 | |
| -1 | -90,113,545 |
Let's try dividing by 4:
90,113,545 ÷ 4 = 22,528,386.25
If the quotient is a whole number, then 4 and 22,528,386.25 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 | 90,113,545 | |
| -1 | 90,113,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 113 | 349 | 457 | 565 | 1,745 | 2,285 | 39,437 | 51,641 | 159,493 | 197,185 | 258,205 | 797,465 | 18,022,709 | 90,113,545 |
| -1 | -5 | -113 | -349 | -457 | -565 | -1,745 | -2,285 | -39,437 | -51,641 | -159,493 | -197,185 | -258,205 | -797,465 | -18,022,709 | -90,113,545 |
Here are some more numbers to try:
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