19703331

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5657}}^1$

素因数の和:5712

約数の個数: 20

約数和(自身を含む): 30123192

約数和(自身を除く): 10419861

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5657, 16971, 50913, 152739, 243251, 458217, 729753, 2189259, 6567777, 19703331]

約数ペア:

[(1, 19703331), (3, 6567777), (9, 2189259), (27, 729753), (43, 458217), (81, 243251), (129, 152739), (387, 50913), (1161, 16971), (3483, 5657)]