30991821

素因数分解:

$3^1\times 7^1\times {\mathrm{839}}^1\times {\mathrm{1759}}^1$

素因数の和:2608

約数の個数: 16

約数和(自身を含む): 47308800

約数和(自身を除く): 16316979

約数列:

[1, 3, 7, 21, 839, 1759, 2517, 5277, 5873, 12313, 17619, 36939, 1475801, 4427403, 10330607, 30991821]

約数ペア:

[(1, 30991821), (3, 10330607), (7, 4427403), (21, 1475801), (839, 36939), (1759, 17619), (2517, 12313), (5277, 5873)]