20512695520

素因数分解:

$2^5\times 5^1\times {\mathrm{263}}^1\times {\mathrm{487469}}^1$

素因数の和:487747

約数の個数: 48

約数和(自身を含む): 48645606240

約数和(自身を除く): 28132910720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 263, 526, 1052, 1315, 2104, 2630, 4208, 5260, 8416, 10520, 21040, 42080, 487469, 974938, 1949876, 2437345, 3899752, 4874690, 7799504, 9749380, 15599008, 19498760, 38997520, 77995040, 128204347, 256408694, 512817388, 641021735, 1025634776, 1282043470, 2051269552, 2564086940, 4102539104, 5128173880, 10256347760, 20512695520]

約数ペア:

[(1, 20512695520), (2, 10256347760), (4, 5128173880), (5, 4102539104), (8, 2564086940), (10, 2051269552), (16, 1282043470), (20, 1025634776), (32, 641021735), (40, 512817388), (80, 256408694), (160, 128204347), (263, 77995040), (526, 38997520), (1052, 19498760), (1315, 15599008), (2104, 9749380), (2630, 7799504), (4208, 4874690), (5260, 3899752), (8416, 2437345), (10520, 1949876), (21040, 974938), (42080, 487469)]