human
Can you provide a code to sum of all even factors of numbers in the range [ l , r ] and the other steps required given the following:
Sum of all even factors of numbers in the range [ l , r ] | Function to calculate the prefix sum of all the even factors.
Add i to all the multiples of i.
Update the prefix sum.
Function to return the sum of all the even factors of the numbers in the given range.
Driver code"
How can the above be solved in Python?
assistant
#Here is code to sum of all even factors of numbers in the range [ l , r ] and the other steps required.
 def sieve_modified ( ) :
	for i in range ( 2 , MAX , 2 ) :
		for j in range ( i , MAX , i ) :
			prefix [ j ] += i
	for i in range ( 1 , MAX ) :
		prefix [ i ] += prefix [ i - 1 ]
def sumEvenFactors ( L , R ) :
	return ( prefix [ R ] - prefix [ L - 1 ] )
if __name__ == " _ _ main _ _ " :
	MAX = 100000
	prefix = [ 0 ] * MAX
	sieve_modified ( )
	l , r = 6 , 10
	print ( sumEvenFactors ( l , r ) )