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- Divisors giving equal quotient and remainder ●●●○○ 50 ptsWhen 2014 is divided by 105, the quotient is 19 and the remainder is also 19. Find all natural numbers other than 105 such that dividing 2014 by gives a quotient equal to the remainder. List the values in increasing order.
- Denominators of partial sums ●●●●○ 100 ptsOlya wrote fractions of the form on cards, where runs over all positive divisors of (including and ). She arranged the cards in some order. She then wrote on the board the number on the first card, the sum of the numbers on the first two cards, the sum of the numbers on the first three cards, and so on, up to the sum of the numbers on all the cards. Each sum was written as an irreducible fraction. What is the smallest possible number of different denominators that could appear on the board?