20728246

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{479}}^1$

素因数の和:780

約数の個数: 32

約数和(自身を含む): 38983680

約数和(自身を除く): 18255434

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 281, 479, 562, 958, 1967, 3091, 3353, 3934, 5269, 6182, 6706, 10538, 21637, 36883, 43274, 73766, 134599, 269198, 942193, 1480589, 1884386, 2961178, 10364123, 20728246]

約数ペア:

[(1, 20728246), (2, 10364123), (7, 2961178), (11, 1884386), (14, 1480589), (22, 942193), (77, 269198), (154, 134599), (281, 73766), (479, 43274), (562, 36883), (958, 21637), (1967, 10538), (3091, 6706), (3353, 6182), (3934, 5269)]