A-M baby

Task/Factors-of-an-integer/Python/factors-of-an-integer-1.py

@@ -0,0 +1,2 @@
+>>> def factors(n):
+      return [i for i in range(1, n + 1) if not n%i]

Task/Factors-of-an-integer/Python/factors-of-an-integer-2.py

@@ -0,0 +1,5 @@
+>>> def factors(n):
+      return [i for i in range(1, n//2 + 1) if not n%i] + [n]
+
+>>> factors(45)
+[1, 3, 5, 9, 15, 45]

Task/Factors-of-an-integer/Python/factors-of-an-integer-3.py

@@ -0,0 +1,14 @@
+>>> from math import sqrt
+>>> def factor(n):
+      factors = set()
+      for x in range(1, int(sqrt(n)) + 1):
+        if n % x == 0:
+          factors.add(x)
+          factors.add(n//x)
+      return sorted(factors)
+
+>>> for i in (45, 53, 64): print( "%i: factors: %s" % (i, factor(i)) )
+
+45: factors: [1, 3, 5, 9, 15, 45]
+53: factors: [1, 53]
+64: factors: [1, 2, 4, 8, 16, 32, 64]

Task/Factors-of-an-integer/Python/factors-of-an-integer-4.py

@@ -0,0 +1,13 @@
+def factor(n):
+	a, r = 1, [1]
+	while a * a < n:
+		a += 1
+		if n % a: continue
+		b, f = 1, []
+		while n % a == 0:
+			n //= a
+			b *= a
+			f += [i * b for i in r]
+		r += f
+	if n > 1: r += [i * n for i in r]
+	return r