19907839

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^2$

素因数の和:187

約数の個数: 24

約数和(自身を含む): 24928640

約数和(自身を除く): 5020801

約数列:

[1, 7, 19, 43, 59, 133, 301, 413, 817, 1121, 2537, 3481, 5719, 7847, 17759, 24367, 48203, 66139, 149683, 337421, 462973, 1047781, 2843977, 19907839]

約数ペア:

[(1, 19907839), (7, 2843977), (19, 1047781), (43, 462973), (59, 337421), (133, 149683), (301, 66139), (413, 48203), (817, 24367), (1121, 17759), (2537, 7847), (3481, 5719)]