18901337

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3919}}^1$

素因数の和:3992

約数の個数: 16

約数和(自身を含む): 23708160

約数和(自身を除く): 4806823

約数列:

[1, 7, 13, 53, 91, 371, 689, 3919, 4823, 27433, 50947, 207707, 356629, 1453949, 2700191, 18901337]

約数ペア:

[(1, 18901337), (7, 2700191), (13, 1453949), (53, 356629), (91, 207707), (371, 50947), (689, 27433), (3919, 4823)]