80866720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4177}}^1$

素因数の和:4214

約数の個数: 72

約数和(自身を含む): 210044772

約数和(自身を除く): 129178052

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1760, 1936, 2420, 3872, 4177, 4840, 8354, 9680, 16708, 19360, 20885, 33416, 41770, 45947, 66832, 83540, 91894, 133664, 167080, 183788, 229735, 334160, 367576, 459470, 505417, 668320, 735152, 918940, 1010834, 1470304, 1837880, 2021668, 2527085, 3675760, 4043336, 5054170, 7351520, 8086672, 10108340, 16173344, 20216680, 40433360, 80866720]

約数ペア:

[(1, 80866720), (2, 40433360), (4, 20216680), (5, 16173344), (8, 10108340), (10, 8086672), (11, 7351520), (16, 5054170), (20, 4043336), (22, 3675760), (32, 2527085), (40, 2021668), (44, 1837880), (55, 1470304), (80, 1010834), (88, 918940), (110, 735152), (121, 668320), (160, 505417), (176, 459470), (220, 367576), (242, 334160), (352, 229735), (440, 183788), (484, 167080), (605, 133664), (880, 91894), (968, 83540), (1210, 66832), (1760, 45947), (1936, 41770), (2420, 33416), (3872, 20885), (4177, 19360), (4840, 16708), (8354, 9680)]