Factors / Factors of 100

Factors of 100

1, 2, 4, 5, 10, 20, 25, 50, 100

100 is a perfect square (10² = 100); that gives 100 an odd 9-divisor count, since only 10 pairs with itself. 100's full pair list is (1, 100), (2, 50), (4, 25), (5, 20), (10, 10), for 9 divisors in total. 100's divisors other than 100 itself sum to 117, 17 above 100: abundant. 100 is even, digit sum 1 for 100; small divisors of 100 include 2, 4, 5, 10. 100 has 9 divisors; 99 has 6 and 101 has 2, so 100 wins here. 100 divided by its largest divisor, 50, gives 2.