81214400

素因数分解:

$2^6\times 5^2\times {\mathrm{193}}^1\times {\mathrm{263}}^1$

素因数の和:478

約数の個数: 84

約数和(自身を含む): 201637392

約数和(自身を除く): 120422992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 193, 200, 263, 320, 386, 400, 526, 772, 800, 965, 1052, 1315, 1544, 1600, 1930, 2104, 2630, 3088, 3860, 4208, 4825, 5260, 6176, 6575, 7720, 8416, 9650, 10520, 12352, 13150, 15440, 16832, 19300, 21040, 26300, 30880, 38600, 42080, 50759, 52600, 61760, 77200, 84160, 101518, 105200, 154400, 203036, 210400, 253795, 308800, 406072, 420800, 507590, 812144, 1015180, 1268975, 1624288, 2030360, 2537950, 3248576, 4060720, 5075900, 8121440, 10151800, 16242880, 20303600, 40607200, 81214400]

約数ペア:

[(1, 81214400), (2, 40607200), (4, 20303600), (5, 16242880), (8, 10151800), (10, 8121440), (16, 5075900), (20, 4060720), (25, 3248576), (32, 2537950), (40, 2030360), (50, 1624288), (64, 1268975), (80, 1015180), (100, 812144), (160, 507590), (193, 420800), (200, 406072), (263, 308800), (320, 253795), (386, 210400), (400, 203036), (526, 154400), (772, 105200), (800, 101518), (965, 84160), (1052, 77200), (1315, 61760), (1544, 52600), (1600, 50759), (1930, 42080), (2104, 38600), (2630, 30880), (3088, 26300), (3860, 21040), (4208, 19300), (4825, 16832), (5260, 15440), (6176, 13150), (6575, 12352), (7720, 10520), (8416, 9650)]