81641120

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4217}}^1$

素因数の和:4254

約数の個数: 72

約数和(自身を含む): 212055732

約数和(自身を除く): 130414612

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, 4217, 4840, 8434, 9680, 16868, 19360, 21085, 33736, 42170, 46387, 67472, 84340, 92774, 134944, 168680, 185548, 231935, 337360, 371096, 463870, 510257, 674720, 742192, 927740, 1020514, 1484384, 1855480, 2041028, 2551285, 3710960, 4082056, 5102570, 7421920, 8164112, 10205140, 16328224, 20410280, 40820560, 81641120]

約数ペア:

[(1, 81641120), (2, 40820560), (4, 20410280), (5, 16328224), (8, 10205140), (10, 8164112), (11, 7421920), (16, 5102570), (20, 4082056), (22, 3710960), (32, 2551285), (40, 2041028), (44, 1855480), (55, 1484384), (80, 1020514), (88, 927740), (110, 742192), (121, 674720), (160, 510257), (176, 463870), (220, 371096), (242, 337360), (352, 231935), (440, 185548), (484, 168680), (605, 134944), (880, 92774), (968, 84340), (1210, 67472), (1760, 46387), (1936, 42170), (2420, 33736), (3872, 21085), (4217, 19360), (4840, 16868), (8434, 9680)]