1989239

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:230

約数の個数: 16

約数和(自身を含む): 2396160

約数和(自身を除く): 406921

約数列:

[1, 7, 31, 89, 103, 217, 623, 721, 2759, 3193, 9167, 19313, 22351, 64169, 284177, 1989239]

約数ペア:

[(1, 1989239), (7, 284177), (31, 64169), (89, 22351), (103, 19313), (217, 9167), (623, 3193), (721, 2759)]