18728395

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{28163}}^1$

素因数の和:28194

約数の個数: 16

約数和(自身を含む): 27037440

約数和(自身を除く): 8309045

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 28163, 140815, 197141, 535097, 985705, 2675485, 3745679, 18728395]

約数ペア:

[(1, 18728395), (5, 3745679), (7, 2675485), (19, 985705), (35, 535097), (95, 197141), (133, 140815), (665, 28163)]