81937919

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{1987}}^1$

素因数の和:2174

約数の個数: 16

約数和(自身を含む): 96569088

約数和(自身を除く): 14631169

約数列:

[1, 7, 43, 137, 301, 959, 1987, 5891, 13909, 41237, 85441, 272219, 598087, 1905533, 11705417, 81937919]

約数ペア:

[(1, 81937919), (7, 11705417), (43, 1905533), (137, 598087), (301, 272219), (959, 85441), (1987, 41237), (5891, 13909)]