20457184

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{653}}^1$

素因数の和:763

約数の個数: 48

約数和(自身を含む): 44498160

約数和(自身を除く): 24040976

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 89, 176, 178, 352, 356, 653, 712, 979, 1306, 1424, 1958, 2612, 2848, 3916, 5224, 7183, 7832, 10448, 14366, 15664, 20896, 28732, 31328, 57464, 58117, 114928, 116234, 229856, 232468, 464936, 639287, 929872, 1278574, 1859744, 2557148, 5114296, 10228592, 20457184]

約数ペア:

[(1, 20457184), (2, 10228592), (4, 5114296), (8, 2557148), (11, 1859744), (16, 1278574), (22, 929872), (32, 639287), (44, 464936), (88, 232468), (89, 229856), (176, 116234), (178, 114928), (352, 58117), (356, 57464), (653, 31328), (712, 28732), (979, 20896), (1306, 15664), (1424, 14366), (1958, 10448), (2612, 7832), (2848, 7183), (3916, 5224)]