A:
Positive:
1 x 426436155 x 85287237 x 609194535 x 1218389191 x 223265955 x 446531337 x 318956379 x 6685
Negative:
-1 x -42643615-5 x -8528723-7 x -6091945-35 x -1218389-191 x -223265-955 x -44653-1337 x -31895-6379 x -6685
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 42,643,615, 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 | 42,643,615 | |
| -1 | -42,643,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,643,615.
Example:
1 x 42,643,615 = 42,643,615
and
-1 x -42,643,615 = 42,643,615
Notice both answers equal 42,643,615
With that explanation out of the way, let's continue. Next, we take the number 42,643,615 and divide it by 2:
42,643,615 ÷ 2 = 21,321,807.5
If the quotient is a whole number, then 2 and 21,321,807.5 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 | 42,643,615 | |
| -1 | -42,643,615 |
Now, we try dividing 42,643,615 by 3:
42,643,615 ÷ 3 = 14,214,538.3333
If the quotient is a whole number, then 3 and 14,214,538.3333 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 | 42,643,615 | |
| -1 | -42,643,615 |
Let's try dividing by 4:
42,643,615 ÷ 4 = 10,660,903.75
If the quotient is a whole number, then 4 and 10,660,903.75 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 | 42,643,615 | |
| -1 | 42,643,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 191 | 955 | 1,337 | 6,379 | 6,685 | 31,895 | 44,653 | 223,265 | 1,218,389 | 6,091,945 | 8,528,723 | 42,643,615 |
| -1 | -5 | -7 | -35 | -191 | -955 | -1,337 | -6,379 | -6,685 | -31,895 | -44,653 | -223,265 | -1,218,389 | -6,091,945 | -8,528,723 | -42,643,615 |
Here are some more numbers to try:
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