20992179

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{2551}}^1$

素因数の和:2778

約数の個数: 16

約数和(自身を含む): 30297344

約数和(自身を除く): 9305165

約数列:

[1, 3, 13, 39, 211, 633, 2551, 2743, 7653, 8229, 33163, 99489, 538261, 1614783, 6997393, 20992179]

約数ペア:

[(1, 20992179), (3, 6997393), (13, 1614783), (39, 538261), (211, 99489), (633, 33163), (2551, 8229), (2743, 7653)]