19774287

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:325

約数の個数: 40

約数和(自身を含む): 32321520

約数和(自身を除く): 12547233

約数列:

[1, 3, 9, 13, 27, 39, 81, 89, 117, 211, 267, 351, 633, 801, 1053, 1157, 1899, 2403, 2743, 3471, 5697, 7209, 8229, 10413, 17091, 18779, 24687, 31239, 56337, 74061, 93717, 169011, 222183, 244127, 507033, 732381, 1521099, 2197143, 6591429, 19774287]

約数ペア:

[(1, 19774287), (3, 6591429), (9, 2197143), (13, 1521099), (27, 732381), (39, 507033), (81, 244127), (89, 222183), (117, 169011), (211, 93717), (267, 74061), (351, 56337), (633, 31239), (801, 24687), (1053, 18779), (1157, 17091), (1899, 10413), (2403, 8229), (2743, 7209), (3471, 5697)]