19990958

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{17881}}^1$

素因数の和:17939

約数の個数: 16

約数和(自身を含む): 33045936

約数和(自身を除く): 13054978

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 17881, 35762, 232453, 464906, 768883, 1537766, 9995479, 19990958]

約数ペア:

[(1, 19990958), (2, 9995479), (13, 1537766), (26, 768883), (43, 464906), (86, 232453), (559, 35762), (1118, 17881)]