A:
Positive:
1 x 420245155 x 840490313 x 323265565 x 646531103 x 408005515 x 816011339 x 313856277 x 6695
Negative:
-1 x -42024515-5 x -8404903-13 x -3232655-65 x -646531-103 x -408005-515 x -81601-1339 x -31385-6277 x -6695
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 42,024,515, 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 | 42,024,515 | |
| -1 | -42,024,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,024,515.
Example:
1 x 42,024,515 = 42,024,515
and
-1 x -42,024,515 = 42,024,515
Notice both answers equal 42,024,515
With that explanation out of the way, let's continue. Next, we take the number 42,024,515 and divide it by 2:
42,024,515 ÷ 2 = 21,012,257.5
If the quotient is a whole number, then 2 and 21,012,257.5 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 | 42,024,515 | |
| -1 | -42,024,515 |
Now, we try dividing 42,024,515 by 3:
42,024,515 ÷ 3 = 14,008,171.6667
If the quotient is a whole number, then 3 and 14,008,171.6667 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 | 42,024,515 | |
| -1 | -42,024,515 |
Let's try dividing by 4:
42,024,515 ÷ 4 = 10,506,128.75
If the quotient is a whole number, then 4 and 10,506,128.75 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 | 42,024,515 | |
| -1 | 42,024,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 103 | 515 | 1,339 | 6,277 | 6,695 | 31,385 | 81,601 | 408,005 | 646,531 | 3,232,655 | 8,404,903 | 42,024,515 |
| -1 | -5 | -13 | -65 | -103 | -515 | -1,339 | -6,277 | -6,695 | -31,385 | -81,601 | -408,005 | -646,531 | -3,232,655 | -8,404,903 | -42,024,515 |
Here are some more numbers to try:
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