21123212

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2297}}^1$

素因数の和:2342

約数の個数: 36

約数和(自身を含む): 42788760

約数和(自身を除く): 21665548

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2297, 2299, 4594, 4598, 9188, 9196, 25267, 43643, 50534, 87286, 101068, 174572, 277937, 480073, 555874, 960146, 1111748, 1920292, 5280803, 10561606, 21123212]

約数ペア:

[(1, 21123212), (2, 10561606), (4, 5280803), (11, 1920292), (19, 1111748), (22, 960146), (38, 555874), (44, 480073), (76, 277937), (121, 174572), (209, 101068), (242, 87286), (418, 50534), (484, 43643), (836, 25267), (2297, 9196), (2299, 9188), (4594, 4598)]