SUM PRIME
Difference between en1 and en2, changed 35 character(s)
I have a difficulty problem. Let F [n] be the number of positive integer divisors of the integer n. for example F [4] = 3 because 4 has 3 divisors which is {1,2,4}. Give two positive integers a and b (a <b; 1<=a<b<10^12). Calculate F[a] + F[a+1] + ... + F[b].↵
INPUT↵
2 5↵
OUTPUT ↵
9↵
PLEASE HELP ME. THANK YOU SO MUCH

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  Rev. Lang. By When Δ Comment
en2 English MonsieurV 2020-01-23 18:12:58 35 Tiny change: 'OUTPUT \n9' -> 'OUTPUT \n9\nPLEASE HELP ME. THANK YOU SO MUCH'
en1 English MonsieurV 2020-01-23 18:12:12 292 Initial revision (published)