20871297

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17977}}^1$

素因数の和:18029

約数の個数: 16

約数和(自身を含む): 31641280

約数和(自身を除く): 10769983

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17977, 53931, 161793, 485379, 773011, 2319033, 6957099, 20871297]

約数ペア:

[(1, 20871297), (3, 6957099), (9, 2319033), (27, 773011), (43, 485379), (129, 161793), (387, 53931), (1161, 17977)]