A:
Positive:
1 x 37214362159 x 630751989 x 4181389131 x 2840791541 x 6878815251 x 708717729 x 4814911659 x 31919
Negative:
-1 x -372143621-59 x -6307519-89 x -4181389-131 x -2840791-541 x -687881-5251 x -70871-7729 x -48149-11659 x -31919
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 372,143,621, 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 | 372,143,621 | |
| -1 | -372,143,621 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 372,143,621.
Example:
1 x 372,143,621 = 372,143,621
and
-1 x -372,143,621 = 372,143,621
Notice both answers equal 372,143,621
With that explanation out of the way, let's continue. Next, we take the number 372,143,621 and divide it by 2:
372,143,621 ÷ 2 = 186,071,810.5
If the quotient is a whole number, then 2 and 186,071,810.5 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 | 372,143,621 | |
| -1 | -372,143,621 |
Now, we try dividing 372,143,621 by 3:
372,143,621 ÷ 3 = 124,047,873.6667
If the quotient is a whole number, then 3 and 124,047,873.6667 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 | 372,143,621 | |
| -1 | -372,143,621 |
Let's try dividing by 4:
372,143,621 ÷ 4 = 93,035,905.25
If the quotient is a whole number, then 4 and 93,035,905.25 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 | 372,143,621 | |
| -1 | 372,143,621 |
If you did it right, you will end up with this table:
| 1 | 59 | 89 | 131 | 541 | 5,251 | 7,729 | 11,659 | 31,919 | 48,149 | 70,871 | 687,881 | 2,840,791 | 4,181,389 | 6,307,519 | 372,143,621 |
| -1 | -59 | -89 | -131 | -541 | -5,251 | -7,729 | -11,659 | -31,919 | -48,149 | -70,871 | -687,881 | -2,840,791 | -4,181,389 | -6,307,519 | -372,143,621 |
Here are some more numbers to try:
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