## https://yukicoder.me/problems/no/752

import math

def f(n):
    return (n * (n + 1)) // 2

def fnc(r, cum_array, array, cum_array2, sqrt_p, P):
    if r <= sqrt_p:
        return cum_array[r]

    ans = cum_array[-1]

    q = P // r
    if q + 1 < len(cum_array2):
        ans += cum_array2[q + 1]

    end = array[q][1]
    a = P * r - q * f(r)
    a -= P * end - q * f(end)
    return ans + a




def main():
    P, Q = map(int, input().split())
    lr = []
    for _ in range(Q):
        l, r = map(int, input().split())
        lr.append((l, r))
    
    # 下準備
    sqrt_p = int(math.sqrt(P))

    ## sqrt_p以下
    cum_array = [0] * (sqrt_p + 1)
    c = 0
    for j in range(1, sqrt_p + 1):
        x = P % j
        c += x
        cum_array[j] = c
    
    # sqrt_p以上
    array = [(10 ** 18, P, 0)]
    for q in range(1, sqrt_p + 1):
        start = P // q
        end = P // (q + 1)
        end = max(end, sqrt_p)

        x = (start - end) * P        
        y = q * (f(start) - f(end))
        x -= y

        array.append((start, end, x))
    
    cum_array2 = [0] * (sqrt_p + 1)
    c = 0
    for j in reversed(range(sqrt_p + 1)):
        c += array[j][2]
        cum_array2[j] = c

    for l, r in lr:
        valr = fnc(r, cum_array, array, cum_array2, sqrt_p, P)
        vall = fnc(l - 1, cum_array, array, cum_array2, sqrt_p, P)
        print(valr - vall)









if __name__ == "__main__":
    main()