20411787

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{26893}}^1$

素因数の和:26930

約数の個数: 16

約数和(自身を含む): 30981888

約数和(自身を除く): 10570101

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 26893, 80679, 295823, 618539, 887469, 1855617, 6803929, 20411787]

約数ペア:

[(1, 20411787), (3, 6803929), (11, 1855617), (23, 887469), (33, 618539), (69, 295823), (253, 80679), (759, 26893)]