19915721251

素因数分解:

${\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{57223}}^1$

素因数の和:57466

約数の個数: 16

約数和(自身を含む): 20948561920

約数和(自身を除く): 1032840669

約数列:

[1, 31, 103, 109, 3193, 3379, 11227, 57223, 348037, 1773913, 5893969, 6237307, 182713039, 193356517, 642442621, 19915721251]

約数ペア:

[(1, 19915721251), (31, 642442621), (103, 193356517), (109, 182713039), (3193, 6237307), (3379, 5893969), (11227, 1773913), (57223, 348037)]