Все делители чисел 864 и 875.
864 : 1, 2, 3, 4, 6, 8, 9 ,12, 16, 18, 24, 27 ,35, 36, 48 ,55 ,72 ,96, 108 ,144, 216 ,288 ,432 , 864. 875:1, 5 ,7, 25, 35 ,125 ,175, 875.