720 is divisible by all its factors.

720 = 2x2x2x2x3x3x5

Hence 720 will be divisible by 2,3, 4,5,6,8,9,10,12, 15, 16,18,20, 24,30,36,40, 45, 48,60, 72,80, 90,120, 180,240,360,720

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