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factors of 63

63 1, 3, 7, 9, 21, 63 -1, -3, -7, -9, -21, -63

64 1, 2, 4, 8, 16, 32, 64 -1, -2, -4, -8, -16, -32, -64

65 1, 5, 13, 65 -1, -5, -13, -65

66 1, 2, 3, 6, 11, 22, 33, 66 -1, -2, -3, -6, -11, -22, -33, -66

67 1, 67 -1, -67

68 1, 2, 4, 17, 34, 68 -1, -2, -4, -17, -34, -68

69 1, 3, 23, 69 -1, -3, -23, -69

70 1, 2, 5, 7, 10, 14, 35, 70 -1, -2, -5, -7, -10, -14, -35, -70

71 1, 71 -1, -71

72 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72 -1, -2, -3, -4, -6, -8, -9, -12, -18, -24, -36, -72