A:
Positive:
1 x 4251887913 x 327068347 x 90465753 x 802243101 x 420979169 x 251591611 x 69589689 x 617111313 x 323832491 x 170694747 x 89575353 x 7943
Negative:
-1 x -42518879-13 x -3270683-47 x -904657-53 x -802243-101 x -420979-169 x -251591-611 x -69589-689 x -61711-1313 x -32383-2491 x -17069-4747 x -8957-5353 x -7943
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 42,518,879, 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 | 42,518,879 | |
| -1 | -42,518,879 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,518,879.
Example:
1 x 42,518,879 = 42,518,879
and
-1 x -42,518,879 = 42,518,879
Notice both answers equal 42,518,879
With that explanation out of the way, let's continue. Next, we take the number 42,518,879 and divide it by 2:
42,518,879 ÷ 2 = 21,259,439.5
If the quotient is a whole number, then 2 and 21,259,439.5 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 | 42,518,879 | |
| -1 | -42,518,879 |
Now, we try dividing 42,518,879 by 3:
42,518,879 ÷ 3 = 14,172,959.6667
If the quotient is a whole number, then 3 and 14,172,959.6667 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 | 42,518,879 | |
| -1 | -42,518,879 |
Let's try dividing by 4:
42,518,879 ÷ 4 = 10,629,719.75
If the quotient is a whole number, then 4 and 10,629,719.75 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 | 42,518,879 | |
| -1 | 42,518,879 |
If you did it right, you will end up with this table:
| 1 | 13 | 47 | 53 | 101 | 169 | 611 | 689 | 1,313 | 2,491 | 4,747 | 5,353 | 7,943 | 8,957 | 17,069 | 32,383 | 61,711 | 69,589 | 251,591 | 420,979 | 802,243 | 904,657 | 3,270,683 | 42,518,879 |
| -1 | -13 | -47 | -53 | -101 | -169 | -611 | -689 | -1,313 | -2,491 | -4,747 | -5,353 | -7,943 | -8,957 | -17,069 | -32,383 | -61,711 | -69,589 | -251,591 | -420,979 | -802,243 | -904,657 | -3,270,683 | -42,518,879 |
Here are some more numbers to try:
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