80696875

素因数分解:

$5^5\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:87

約数の個数: 72

約数和(自身を含む): 128241792

約数和(自身を除く): 47544917

約数列:

[1, 5, 7, 17, 25, 31, 35, 49, 85, 119, 125, 155, 175, 217, 245, 425, 527, 595, 625, 775, 833, 875, 1085, 1225, 1519, 2125, 2635, 2975, 3125, 3689, 3875, 4165, 4375, 5425, 6125, 7595, 10625, 13175, 14875, 18445, 19375, 20825, 21875, 25823, 27125, 30625, 37975, 53125, 65875, 74375, 92225, 96875, 104125, 129115, 135625, 153125, 189875, 329375, 371875, 461125, 520625, 645575, 678125, 949375, 1646875, 2305625, 2603125, 3227875, 4746875, 11528125, 16139375, 80696875]

約数ペア:

[(1, 80696875), (5, 16139375), (7, 11528125), (17, 4746875), (25, 3227875), (31, 2603125), (35, 2305625), (49, 1646875), (85, 949375), (119, 678125), (125, 645575), (155, 520625), (175, 461125), (217, 371875), (245, 329375), (425, 189875), (527, 153125), (595, 135625), (625, 129115), (775, 104125), (833, 96875), (875, 92225), (1085, 74375), (1225, 65875), (1519, 53125), (2125, 37975), (2635, 30625), (2975, 27125), (3125, 25823), (3689, 21875), (3875, 20825), (4165, 19375), (4375, 18445), (5425, 14875), (6125, 13175), (7595, 10625)]