A:
Positive:
1 x 5142124317 x 302477947 x 1094069139 x 369937463 x 111061799 x 643572363 x 217616533 x 7871
Negative:
-1 x -51421243-17 x -3024779-47 x -1094069-139 x -369937-463 x -111061-799 x -64357-2363 x -21761-6533 x -7871
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 51,421,243, 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 | 51,421,243 | |
| -1 | -51,421,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,421,243.
Example:
1 x 51,421,243 = 51,421,243
and
-1 x -51,421,243 = 51,421,243
Notice both answers equal 51,421,243
With that explanation out of the way, let's continue. Next, we take the number 51,421,243 and divide it by 2:
51,421,243 ÷ 2 = 25,710,621.5
If the quotient is a whole number, then 2 and 25,710,621.5 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 | 51,421,243 | |
| -1 | -51,421,243 |
Now, we try dividing 51,421,243 by 3:
51,421,243 ÷ 3 = 17,140,414.3333
If the quotient is a whole number, then 3 and 17,140,414.3333 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 | 51,421,243 | |
| -1 | -51,421,243 |
Let's try dividing by 4:
51,421,243 ÷ 4 = 12,855,310.75
If the quotient is a whole number, then 4 and 12,855,310.75 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 | 51,421,243 | |
| -1 | 51,421,243 |
If you did it right, you will end up with this table:
| 1 | 17 | 47 | 139 | 463 | 799 | 2,363 | 6,533 | 7,871 | 21,761 | 64,357 | 111,061 | 369,937 | 1,094,069 | 3,024,779 | 51,421,243 |
| -1 | -17 | -47 | -139 | -463 | -799 | -2,363 | -6,533 | -7,871 | -21,761 | -64,357 | -111,061 | -369,937 | -1,094,069 | -3,024,779 | -51,421,243 |
Here are some more numbers to try:
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