20939974

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4783}}^1$

素因数の和:4995

約数の個数: 16

約数和(自身を含む): 34444800

約数和(自身を除く): 13504826

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 4783, 9566, 52613, 105226, 951817, 1903634, 10469987, 20939974]

約数ペア:

[(1, 20939974), (2, 10469987), (11, 1903634), (22, 951817), (199, 105226), (398, 52613), (2189, 9566), (4378, 4783)]