A:
Positive:
1 x 428903755 x 857807511 x 389912525 x 171561555 x 779825125 x 343123275 x 1559651375 x 31193
Negative:
-1 x -42890375-5 x -8578075-11 x -3899125-25 x -1715615-55 x -779825-125 x -343123-275 x -155965-1375 x -31193
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 42,890,375, 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 | 42,890,375 | |
| -1 | -42,890,375 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,890,375.
Example:
1 x 42,890,375 = 42,890,375
and
-1 x -42,890,375 = 42,890,375
Notice both answers equal 42,890,375
With that explanation out of the way, let's continue. Next, we take the number 42,890,375 and divide it by 2:
42,890,375 ÷ 2 = 21,445,187.5
If the quotient is a whole number, then 2 and 21,445,187.5 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 | 42,890,375 | |
| -1 | -42,890,375 |
Now, we try dividing 42,890,375 by 3:
42,890,375 ÷ 3 = 14,296,791.6667
If the quotient is a whole number, then 3 and 14,296,791.6667 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 | 42,890,375 | |
| -1 | -42,890,375 |
Let's try dividing by 4:
42,890,375 ÷ 4 = 10,722,593.75
If the quotient is a whole number, then 4 and 10,722,593.75 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 | 42,890,375 | |
| -1 | 42,890,375 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 125 | 275 | 1,375 | 31,193 | 155,965 | 343,123 | 779,825 | 1,715,615 | 3,899,125 | 8,578,075 | 42,890,375 |
| -1 | -5 | -11 | -25 | -55 | -125 | -275 | -1,375 | -31,193 | -155,965 | -343,123 | -779,825 | -1,715,615 | -3,899,125 | -8,578,075 | -42,890,375 |
Here are some more numbers to try:
Try the factor calculator