1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72
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72 is an abundant number because the sum of its positive divisors, not including 72 itself, is larger than 72. Positive divisors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. 1 + 2 + 3 + 4 + 6 + 8 + 9 + 12 + 18 + 24 + 36 = 123 > 72 (if an integer is larger than the sum of its positive divisors , not including the integer itself, then that integer is called a deficient number, such as prime or power of prime numbers or numbers like 10 are).
The divisors of 97 are: 1, 97.
The divisors of 145 are 1, 5, 29, 145.
The single-digit divisors of 7,000 are 1, 2, 4, 5, 7, 8.
Eight has four divisors (factors): 1, 2, 4, 8.