19885887

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3803}}^1$

素因数の和:3899

約数の個数: 24

約数和(自身を含む): 33231744

約数和(自身を除く): 13345857

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 3803, 5229, 11409, 26621, 34227, 79863, 239589, 315649, 946947, 2209543, 2840841, 6628629, 19885887]

約数ペア:

[(1, 19885887), (3, 6628629), (7, 2840841), (9, 2209543), (21, 946947), (63, 315649), (83, 239589), (249, 79863), (581, 34227), (747, 26621), (1743, 11409), (3803, 5229)]