19912311

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5717}}^1$

素因数の和:5772

約数の個数: 20

約数和(自身を含む): 30442632

約数和(自身を除く): 10530321

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5717, 17151, 51453, 154359, 245831, 463077, 737493, 2212479, 6637437, 19912311]

約数ペア:

[(1, 19912311), (3, 6637437), (9, 2212479), (27, 737493), (43, 463077), (81, 245831), (129, 154359), (387, 51453), (1161, 17151), (3483, 5717)]