20719128

素因数分解:

$2^3\times 3^1\times {\mathrm{521}}^1\times {\mathrm{1657}}^1$

素因数の和:2187

約数の個数: 32

約数和(自身を含む): 51928560

約数和(自身を除く): 31209432

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 521, 1042, 1563, 1657, 2084, 3126, 3314, 4168, 4971, 6252, 6628, 9942, 12504, 13256, 19884, 39768, 863297, 1726594, 2589891, 3453188, 5179782, 6906376, 10359564, 20719128]

約数ペア:

[(1, 20719128), (2, 10359564), (3, 6906376), (4, 5179782), (6, 3453188), (8, 2589891), (12, 1726594), (24, 863297), (521, 39768), (1042, 19884), (1563, 13256), (1657, 12504), (2084, 9942), (3126, 6628), (3314, 6252), (4168, 4971)]