209902221

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 323953344

約数和(自身を除く): 114051123

約数列:

[1, 3, 9, 37, 43, 107, 111, 129, 137, 321, 333, 387, 411, 963, 1233, 1591, 3959, 4601, 4773, 5069, 5891, 11877, 13803, 14319, 14659, 15207, 17673, 35631, 41409, 43977, 45621, 53019, 131931, 170237, 217967, 510711, 542383, 630337, 653901, 1532133, 1627149, 1891011, 1961703, 4881447, 5673033, 23322469, 69967407, 209902221]

約数ペア:

[(1, 209902221), (3, 69967407), (9, 23322469), (37, 5673033), (43, 4881447), (107, 1961703), (111, 1891011), (129, 1627149), (137, 1532133), (321, 653901), (333, 630337), (387, 542383), (411, 510711), (963, 217967), (1233, 170237), (1591, 131931), (3959, 53019), (4601, 45621), (4773, 43977), (5069, 41409), (5891, 35631), (11877, 17673), (13803, 15207), (14319, 14659)]