Every integer is divisible by 1. So 1 is a factor.
The number ends in a 2 and so is even. Therefore, 2 is a factor.
The sum of the digits is 3+1+2 = 6 which is divisible by 3 so 3 is a factor.
2 and 3 are both factors so 2*3 = 6 is a factor.
So, four factors are 1, 2, 3 and 6.
Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)
The factors of 312 are 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, and 312
why does the divisibility rule work for 4
If a number is divisible by 3, and also by 4, then it is divisible by 12 - so you might use the divisibility rules for those two numbers. Although it might be simpler just to perform the division.
A number is divisible by 4 if and only if its last two digits are divisible by 4. For example, 53112 is divisible by 4, because the last two digits (12) are divisible by 4.
1, 2, 3 and 4
The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.
Factors are divisors. If you know the divisibility rules, you know that 80 is divisible by 1, 2, 4, 5 and 8. If you divide 80 by those numbers, you find the other half of the factor pairs.
312 has sixteen factors.1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312
The composite factors of 312 are 4, 6, 8, 12, 24, 26, 39, 52, 78, 104, 156, 312
The factors of 312 are 1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, and 312
Do the division, if there is no remainder, it is divisible. Seriously, many of the "divisibility rules" that have been discovered become more complicated than doing the actual division. For practical purposes, just learn the divisibility rules for a few simple cases (divisibility rules by 2, 4, 8, 5, 10, 3, 9, 7, 11, and 13), and for all other cases, just do the division.
You only have to test the numbers 1 through 5. If you know the rules of divisibility, you know that 3, 4 and 5 aren't factors.
The least 4 factors of 144 are 1, 2, 3, and 4 .
1, 2, 3 and 4
26
Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)Since 1992 is divisible by 4, it is a leap year - meaning it has a February 29.(About divisibility by 4, special rules apply at the end of each century.)