19973888

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:241

約数の個数: 72

約数和(自身を含む): 44812656

約数和(自身を除く): 24838768

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 41, 44, 64, 82, 88, 128, 164, 173, 176, 256, 328, 346, 352, 451, 656, 692, 704, 902, 1312, 1384, 1408, 1804, 1903, 2624, 2768, 2816, 3608, 3806, 5248, 5536, 7093, 7216, 7612, 10496, 11072, 14186, 14432, 15224, 22144, 28372, 28864, 30448, 44288, 56744, 57728, 60896, 78023, 113488, 115456, 121792, 156046, 226976, 243584, 312092, 453952, 487168, 624184, 907904, 1248368, 1815808, 2496736, 4993472, 9986944, 19973888]

約数ペア:

[(1, 19973888), (2, 9986944), (4, 4993472), (8, 2496736), (11, 1815808), (16, 1248368), (22, 907904), (32, 624184), (41, 487168), (44, 453952), (64, 312092), (82, 243584), (88, 226976), (128, 156046), (164, 121792), (173, 115456), (176, 113488), (256, 78023), (328, 60896), (346, 57728), (352, 56744), (451, 44288), (656, 30448), (692, 28864), (704, 28372), (902, 22144), (1312, 15224), (1384, 14432), (1408, 14186), (1804, 11072), (1903, 10496), (2624, 7612), (2768, 7216), (2816, 7093), (3608, 5536), (3806, 5248)]