A:
Positive:
1 x 421135555 x 842271111 x 382850543 x 97938555 x 765701215 x 195877473 x 890352365 x 17807
Negative:
-1 x -42113555-5 x -8422711-11 x -3828505-43 x -979385-55 x -765701-215 x -195877-473 x -89035-2365 x -17807
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 42,113,555, 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 | 42,113,555 | |
| -1 | -42,113,555 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,113,555.
Example:
1 x 42,113,555 = 42,113,555
and
-1 x -42,113,555 = 42,113,555
Notice both answers equal 42,113,555
With that explanation out of the way, let's continue. Next, we take the number 42,113,555 and divide it by 2:
42,113,555 ÷ 2 = 21,056,777.5
If the quotient is a whole number, then 2 and 21,056,777.5 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 | 42,113,555 | |
| -1 | -42,113,555 |
Now, we try dividing 42,113,555 by 3:
42,113,555 ÷ 3 = 14,037,851.6667
If the quotient is a whole number, then 3 and 14,037,851.6667 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 | 42,113,555 | |
| -1 | -42,113,555 |
Let's try dividing by 4:
42,113,555 ÷ 4 = 10,528,388.75
If the quotient is a whole number, then 4 and 10,528,388.75 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 | 42,113,555 | |
| -1 | 42,113,555 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 43 | 55 | 215 | 473 | 2,365 | 17,807 | 89,035 | 195,877 | 765,701 | 979,385 | 3,828,505 | 8,422,711 | 42,113,555 |
| -1 | -5 | -11 | -43 | -55 | -215 | -473 | -2,365 | -17,807 | -89,035 | -195,877 | -765,701 | -979,385 | -3,828,505 | -8,422,711 | -42,113,555 |
Here are some more numbers to try:
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