20590507

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1021}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 24462592

約数和(自身を除く): 3872085

約数列:

[1, 7, 43, 67, 301, 469, 1021, 2881, 7147, 20167, 43903, 68407, 307321, 478849, 2941501, 20590507]

約数ペア:

[(1, 20590507), (7, 2941501), (43, 478849), (67, 307321), (301, 68407), (469, 43903), (1021, 20167), (2881, 7147)]