18557903

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4339}}^1$

素因数の和:4406

約数の個数: 16

約数和(自身を含む): 23331840

約数和(自身を除く): 4773937

約数列:

[1, 7, 13, 47, 91, 329, 611, 4277, 4339, 30373, 56407, 203933, 394849, 1427531, 2651129, 18557903]

約数ペア:

[(1, 18557903), (7, 2651129), (13, 1427531), (47, 394849), (91, 203933), (329, 56407), (611, 30373), (4277, 4339)]