A:
Positive:
1 x 1511122255 x 3022244511 x 1373747519 x 795327525 x 604448955 x 274749595 x 1590655209 x 723025275 x 549499475 x 3181311045 x 1446055225 x 28921
Negative:
-1 x -151112225-5 x -30222445-11 x -13737475-19 x -7953275-25 x -6044489-55 x -2747495-95 x -1590655-209 x -723025-275 x -549499-475 x -318131-1045 x -144605-5225 x -28921
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 151,112,225, 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 | 151,112,225 | |
| -1 | -151,112,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,112,225.
Example:
1 x 151,112,225 = 151,112,225
and
-1 x -151,112,225 = 151,112,225
Notice both answers equal 151,112,225
With that explanation out of the way, let's continue. Next, we take the number 151,112,225 and divide it by 2:
151,112,225 ÷ 2 = 75,556,112.5
If the quotient is a whole number, then 2 and 75,556,112.5 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 | 151,112,225 | |
| -1 | -151,112,225 |
Now, we try dividing 151,112,225 by 3:
151,112,225 ÷ 3 = 50,370,741.6667
If the quotient is a whole number, then 3 and 50,370,741.6667 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 | 151,112,225 | |
| -1 | -151,112,225 |
Let's try dividing by 4:
151,112,225 ÷ 4 = 37,778,056.25
If the quotient is a whole number, then 4 and 37,778,056.25 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 | 151,112,225 | |
| -1 | 151,112,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 25 | 55 | 95 | 209 | 275 | 475 | 1,045 | 5,225 | 28,921 | 144,605 | 318,131 | 549,499 | 723,025 | 1,590,655 | 2,747,495 | 6,044,489 | 7,953,275 | 13,737,475 | 30,222,445 | 151,112,225 |
| -1 | -5 | -11 | -19 | -25 | -55 | -95 | -209 | -275 | -475 | -1,045 | -5,225 | -28,921 | -144,605 | -318,131 | -549,499 | -723,025 | -1,590,655 | -2,747,495 | -6,044,489 | -7,953,275 | -13,737,475 | -30,222,445 | -151,112,225 |
Here are some more numbers to try:
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