19887008

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 22025632

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 139, 263, 272, 278, 526, 544, 556, 1052, 1112, 2104, 2224, 2363, 4208, 4448, 4471, 4726, 8416, 8942, 9452, 17884, 18904, 35768, 36557, 37808, 71536, 73114, 75616, 143072, 146228, 292456, 584912, 621469, 1169824, 1242938, 2485876, 4971752, 9943504, 19887008]

約数ペア:

[(1, 19887008), (2, 9943504), (4, 4971752), (8, 2485876), (16, 1242938), (17, 1169824), (32, 621469), (34, 584912), (68, 292456), (136, 146228), (139, 143072), (263, 75616), (272, 73114), (278, 71536), (526, 37808), (544, 36557), (556, 35768), (1052, 18904), (1112, 17884), (2104, 9452), (2224, 8942), (2363, 8416), (4208, 4726), (4448, 4471)]