2178780981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{915839}}^1$

素因数の和:915916

約数の個数: 16

約数和(自身を含む): 3179796480

約数和(自身を除く): 1001015499

約数列:

[1, 3, 13, 39, 61, 183, 793, 2379, 915839, 2747517, 11905907, 35717721, 55866179, 167598537, 726260327, 2178780981]

約数ペア:

[(1, 2178780981), (3, 726260327), (13, 167598537), (39, 55866179), (61, 35717721), (183, 11905907), (793, 2747517), (2379, 915839)]