19691231

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{881}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 23482368

約数和(自身を除く): 3791137

約数列:

[1, 7, 31, 103, 217, 721, 881, 3193, 6167, 22351, 27311, 90743, 191177, 635201, 2813033, 19691231]

約数ペア:

[(1, 19691231), (7, 2813033), (31, 635201), (103, 191177), (217, 90743), (721, 27311), (881, 22351), (3193, 6167)]