1781182143

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{1691531}}^1$

素因数の和:1691556

約数の個数: 20

約数和(自身を含む): 2865455208

約数和(自身を除く): 1084273065

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 1691531, 5074593, 15223779, 21989903, 45671337, 65969709, 137014011, 197909127, 593727381, 1781182143]

約数ペア:

[(1, 1781182143), (3, 593727381), (9, 197909127), (13, 137014011), (27, 65969709), (39, 45671337), (81, 21989903), (117, 15223779), (351, 5074593), (1053, 1691531)]