1, 3, 7, 11, 21, 33, 77, 231.
320 has 14 divisors.
The divisors of 23 are: 1, 23.
Sum of divisors: 1,392.
The divisors of 66 are 1,2,3,6,11,22,33 and 66.
The divisors of 99 are: 1, 3, 9, 11, 33, 99.
99 has six divisors: 1, 3, 9, 11, 33, 99.
2,013 has 8 divisors: 1 3 11 33 61 183 671 2013.
The divisors (factors) of 33 are: 1, 3, 11, 33.
1, 3, 7, 11, 21, 33, 77, 231.
A perfect number is a number that is the sum of its divisors (the divisors exclude the number itself).When the sum of the divisors is greater than a number then that number is abundant.As the number itself is excluded from the divisors then the only divisor of 31 is 1.So, 31 is a deficient number.Note : The first few abundant numbers are 12,18,20,24,30 ... and these continue to be even. The first abundant odd number is 945 = 33 x 5 x 7 for which its divisors total 975.
Count of divisors: 12 Factorization: 3 * 3 * 7 * 11 Divisors: 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693 Sum of divisors: 1248 Number 693 is pronounced six hundred ninety three. Number 693 is a composite number. Factors of 693 are 3 * 3 * 7 * 11. Number 693 has 12 divisors: 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693. Sum of the divisors is 1248. Number 693 is not a Fibonacci number. It is not a Bell number. Number 693 is not a Catalan number.
31,37 are not composite
Divisors of 99 are: 1, 3, 9, 11, 33, 99 Prime factors of 99 are: 32 X 11
Divisors are used to divide numbers.
495 has 12 divisors. They are: 1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495.
2,4,8 (1 and 16 are divisors too, but the number and 1 are always divisors)