21990812

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{593}}^1$

素因数の和:797

約数の個数: 24

約数和(自身を含む): 39384576

約数和(自身を除く): 17393764

約数列:

[1, 2, 4, 73, 127, 146, 254, 292, 508, 593, 1186, 2372, 9271, 18542, 37084, 43289, 75311, 86578, 150622, 173156, 301244, 5497703, 10995406, 21990812]

約数ペア:

[(1, 21990812), (2, 10995406), (4, 5497703), (73, 301244), (127, 173156), (146, 150622), (254, 86578), (292, 75311), (508, 43289), (593, 37084), (1186, 18542), (2372, 9271)]