81518721

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{20143}}^1$

素因数の和:20236

約数の個数: 16

約数和(自身を含む): 116029440

約数和(自身を除く): 34510719

約数列:

[1, 3, 19, 57, 71, 213, 1349, 4047, 20143, 60429, 382717, 1148151, 1430153, 4290459, 27172907, 81518721]

約数ペア:

[(1, 81518721), (3, 27172907), (19, 4290459), (57, 1430153), (71, 1148151), (213, 382717), (1349, 60429), (4047, 20143)]