20840897

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{8731}}^1$

素因数の和:8780

約数の個数: 16

約数和(自身を含む): 26824704

約数和(自身を除く): 5983807

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 8731, 61117, 96041, 270661, 672287, 1894627, 2977271, 20840897]

約数ペア:

[(1, 20840897), (7, 2977271), (11, 1894627), (31, 672287), (77, 270661), (217, 96041), (341, 61117), (2387, 8731)]