20517123

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1949}}^1$

素因数の和:2003

約数の個数: 24

約数和(自身を含む): 31122000

約数和(自身を除く): 10604877

約数列:

[1, 3, 11, 29, 33, 87, 121, 319, 363, 957, 1949, 3509, 5847, 10527, 21439, 56521, 64317, 169563, 235829, 621731, 707487, 1865193, 6839041, 20517123]

約数ペア:

[(1, 20517123), (3, 6839041), (11, 1865193), (29, 707487), (33, 621731), (87, 235829), (121, 169563), (319, 64317), (363, 56521), (957, 21439), (1949, 10527), (3509, 5847)]