20091379

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 27279360

約数和(自身を除く): 7187981

約数列:

[1, 7, 11, 19, 31, 77, 133, 209, 217, 341, 443, 589, 1463, 2387, 3101, 4123, 4873, 6479, 8417, 13733, 34111, 45353, 58919, 92587, 96131, 151063, 260927, 648109, 1057441, 1826489, 2870197, 20091379]

約数ペア:

[(1, 20091379), (7, 2870197), (11, 1826489), (19, 1057441), (31, 648109), (77, 260927), (133, 151063), (209, 96131), (217, 92587), (341, 58919), (443, 45353), (589, 34111), (1463, 13733), (2387, 8417), (3101, 6479), (4123, 4873)]