20819991

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{15881}}^1$

素因数の和:15926

約数の個数: 16

約数和(自身を含む): 30493440

約数和(自身を除く): 9673449

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 15881, 47643, 301739, 365263, 905217, 1095789, 6939997, 20819991]

約数ペア:

[(1, 20819991), (3, 6939997), (19, 1095789), (23, 905217), (57, 365263), (69, 301739), (437, 47643), (1311, 15881)]