Ejemplo n.º 1
0
func main() {
	sum := uint64(2)
outerloop:
	for i := uint64(3); i < 2000000; i = i + 2 {
		limit := euler.Sqrt(i)
		for j := uint64(3); j <= limit; j = j + 2 {
			if i%j == 0 {
				continue outerloop
			}
		}
		sum = sum + i
	}
	fmt.Printf("10 %d\n", sum)
}
Ejemplo n.º 2
0
func main() {
	var i, j, tn, factors uint64
	for factors < 500 {
		i++
		tn = tn + i
		factors = 2 // tn, 1
		limit := euler.Sqrt(tn)
		for j = 2; j <= limit; j++ {
			if tn%j == 0 {
				factors += 2
			}
		}
	}
	fmt.Printf("12 %d\n", tn)
}
Ejemplo n.º 3
0
func divisor_sum(n uint64) uint64 {
	var sum uint64
	if n == 1 {
		return 1
	}
	limit := euler.Sqrt(n)
	sum = 1
	if limit*limit == n {
		sum = sum + limit
	}
	for i := uint64(2); i < limit; i++ {
		if n%i == 0 {
			sum = sum + i + n/i
		}
	}
	return sum
}