20486992

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:763

約数の個数: 40

約数和(自身を含む): 41738400

約数和(自身を除く): 21251408

約数列:

[1, 2, 4, 8, 16, 29, 58, 67, 116, 134, 232, 268, 464, 536, 659, 1072, 1318, 1943, 2636, 3886, 5272, 7772, 10544, 15544, 19111, 31088, 38222, 44153, 76444, 88306, 152888, 176612, 305776, 353224, 706448, 1280437, 2560874, 5121748, 10243496, 20486992]

約数ペア:

[(1, 20486992), (2, 10243496), (4, 5121748), (8, 2560874), (16, 1280437), (29, 706448), (58, 353224), (67, 305776), (116, 176612), (134, 152888), (232, 88306), (268, 76444), (464, 44153), (536, 38222), (659, 31088), (1072, 19111), (1318, 15544), (1943, 10544), (2636, 7772), (3886, 5272)]