👉 In mathematics, a sectionary is a type of divisor in arithmetic progression. A sectionary number is defined as a number that divides evenly into another number without leaving any remainder. For example: - The first sectionary number is 1 because it's the only one that divides evenly into all numbers from 1 to 9. - The second sectionary number is 3 because it divides evenly into both 4 and 5, which are also part of the sequence 1, 2
