19718049

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7121}}^1$

素因数の和:7208

約数の個数: 16

約数和(自身を含む): 28715904

約数和(自身を除く): 8997855

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7121, 21363, 92573, 277719, 505591, 1516773, 6572683, 19718049]

約数ペア:

[(1, 19718049), (3, 6572683), (13, 1516773), (39, 505591), (71, 277719), (213, 92573), (923, 21363), (2769, 7121)]