81402068

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^2\times {\mathrm{367}}^1$

素因数の和:524

約数の個数: 36

約数和(自身を含む): 158053056

約数和(自身を除く): 76650988

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 367, 734, 781, 1468, 1562, 3124, 4037, 5041, 8074, 10082, 16148, 20164, 26057, 52114, 55451, 104228, 110902, 221804, 286627, 573254, 1146508, 1850047, 3700094, 7400188, 20350517, 40701034, 81402068]

約数ペア:

[(1, 81402068), (2, 40701034), (4, 20350517), (11, 7400188), (22, 3700094), (44, 1850047), (71, 1146508), (142, 573254), (284, 286627), (367, 221804), (734, 110902), (781, 104228), (1468, 55451), (1562, 52114), (3124, 26057), (4037, 20164), (5041, 16148), (8074, 10082)]