18490661

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{1153}}^1$

素因数の和:1268

約数の個数: 16

約数和(自身を含む): 22156800

約数和(自身を除く): 3666139

約数列:

[1, 7, 29, 79, 203, 553, 1153, 2291, 8071, 16037, 33437, 91087, 234059, 637609, 2641523, 18490661]

約数ペア:

[(1, 18490661), (7, 2641523), (29, 637609), (79, 234059), (203, 91087), (553, 33437), (1153, 16037), (2291, 8071)]