A:
Positive:
1 x 423452155 x 846904311 x 384956517 x 249089555 x 76991385 x 498179187 x 226445935 x 45289
Negative:
-1 x -42345215-5 x -8469043-11 x -3849565-17 x -2490895-55 x -769913-85 x -498179-187 x -226445-935 x -45289
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 42,345,215, 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 | 42,345,215 | |
| -1 | -42,345,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,345,215.
Example:
1 x 42,345,215 = 42,345,215
and
-1 x -42,345,215 = 42,345,215
Notice both answers equal 42,345,215
With that explanation out of the way, let's continue. Next, we take the number 42,345,215 and divide it by 2:
42,345,215 ÷ 2 = 21,172,607.5
If the quotient is a whole number, then 2 and 21,172,607.5 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 | 42,345,215 | |
| -1 | -42,345,215 |
Now, we try dividing 42,345,215 by 3:
42,345,215 ÷ 3 = 14,115,071.6667
If the quotient is a whole number, then 3 and 14,115,071.6667 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 | 42,345,215 | |
| -1 | -42,345,215 |
Let's try dividing by 4:
42,345,215 ÷ 4 = 10,586,303.75
If the quotient is a whole number, then 4 and 10,586,303.75 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 | 42,345,215 | |
| -1 | 42,345,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 17 | 55 | 85 | 187 | 935 | 45,289 | 226,445 | 498,179 | 769,913 | 2,490,895 | 3,849,565 | 8,469,043 | 42,345,215 |
| -1 | -5 | -11 | -17 | -55 | -85 | -187 | -935 | -45,289 | -226,445 | -498,179 | -769,913 | -2,490,895 | -3,849,565 | -8,469,043 | -42,345,215 |
Here are some more numbers to try:
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