20387884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{661}}^1\times {\mathrm{701}}^1$

素因数の和:1377

約数の個数: 24

約数和(自身を含む): 39036816

約数和(自身を除く): 18648932

約数列:

[1, 2, 4, 11, 22, 44, 661, 701, 1322, 1402, 2644, 2804, 7271, 7711, 14542, 15422, 29084, 30844, 463361, 926722, 1853444, 5096971, 10193942, 20387884]

約数ペア:

[(1, 20387884), (2, 10193942), (4, 5096971), (11, 1853444), (22, 926722), (44, 463361), (661, 30844), (701, 29084), (1322, 15422), (1402, 14542), (2644, 7711), (2804, 7271)]