A:
Positive:
1 x 510031555 x 102006317 x 728616535 x 1457233107 x 476665535 x 95333749 x 680953745 x 13619
Negative:
-1 x -51003155-5 x -10200631-7 x -7286165-35 x -1457233-107 x -476665-535 x -95333-749 x -68095-3745 x -13619
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 51,003,155, 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 | 51,003,155 | |
| -1 | -51,003,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 51,003,155.
Example:
1 x 51,003,155 = 51,003,155
and
-1 x -51,003,155 = 51,003,155
Notice both answers equal 51,003,155
With that explanation out of the way, let's continue. Next, we take the number 51,003,155 and divide it by 2:
51,003,155 ÷ 2 = 25,501,577.5
If the quotient is a whole number, then 2 and 25,501,577.5 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 | 51,003,155 | |
| -1 | -51,003,155 |
Now, we try dividing 51,003,155 by 3:
51,003,155 ÷ 3 = 17,001,051.6667
If the quotient is a whole number, then 3 and 17,001,051.6667 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 | 51,003,155 | |
| -1 | -51,003,155 |
Let's try dividing by 4:
51,003,155 ÷ 4 = 12,750,788.75
If the quotient is a whole number, then 4 and 12,750,788.75 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 | 51,003,155 | |
| -1 | 51,003,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 107 | 535 | 749 | 3,745 | 13,619 | 68,095 | 95,333 | 476,665 | 1,457,233 | 7,286,165 | 10,200,631 | 51,003,155 |
| -1 | -5 | -7 | -35 | -107 | -535 | -749 | -3,745 | -13,619 | -68,095 | -95,333 | -476,665 | -1,457,233 | -7,286,165 | -10,200,631 | -51,003,155 |
Here are some more numbers to try:
Try the factor calculator