20187981

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{673}}^1$

素因数の和:794

約数の個数: 32

約数和(自身を含む): 32999040

約数和(自身を除く): 12811059

約数列:

[1, 3, 9, 11, 27, 33, 99, 101, 297, 303, 673, 909, 1111, 2019, 2727, 3333, 6057, 7403, 9999, 18171, 22209, 29997, 66627, 67973, 199881, 203919, 611757, 747703, 1835271, 2243109, 6729327, 20187981]

約数ペア:

[(1, 20187981), (3, 6729327), (9, 2243109), (11, 1835271), (27, 747703), (33, 611757), (99, 203919), (101, 199881), (297, 67973), (303, 66627), (673, 29997), (909, 22209), (1111, 18171), (2019, 9999), (2727, 7403), (3333, 6057)]