A:
Positive:
1 x 420708355 x 841416717 x 247475559 x 71306585 x 494951295 x 1426131003 x 419455015 x 8389
Negative:
-1 x -42070835-5 x -8414167-17 x -2474755-59 x -713065-85 x -494951-295 x -142613-1003 x -41945-5015 x -8389
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 42,070,835, 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 | 42,070,835 | |
| -1 | -42,070,835 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,070,835.
Example:
1 x 42,070,835 = 42,070,835
and
-1 x -42,070,835 = 42,070,835
Notice both answers equal 42,070,835
With that explanation out of the way, let's continue. Next, we take the number 42,070,835 and divide it by 2:
42,070,835 ÷ 2 = 21,035,417.5
If the quotient is a whole number, then 2 and 21,035,417.5 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 | 42,070,835 | |
| -1 | -42,070,835 |
Now, we try dividing 42,070,835 by 3:
42,070,835 ÷ 3 = 14,023,611.6667
If the quotient is a whole number, then 3 and 14,023,611.6667 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 | 42,070,835 | |
| -1 | -42,070,835 |
Let's try dividing by 4:
42,070,835 ÷ 4 = 10,517,708.75
If the quotient is a whole number, then 4 and 10,517,708.75 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 | 42,070,835 | |
| -1 | 42,070,835 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 59 | 85 | 295 | 1,003 | 5,015 | 8,389 | 41,945 | 142,613 | 494,951 | 713,065 | 2,474,755 | 8,414,167 | 42,070,835 |
| -1 | -5 | -17 | -59 | -85 | -295 | -1,003 | -5,015 | -8,389 | -41,945 | -142,613 | -494,951 | -713,065 | -2,474,755 | -8,414,167 | -42,070,835 |
Here are some more numbers to try:
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