209941281

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{709}}^1\times {\mathrm{997}}^1$

素因数の和:1726

約数の個数: 32

約数和(自身を含む): 340118400

約数和(自身を除く): 130177119

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 709, 997, 2127, 2991, 6381, 7799, 8973, 10967, 19143, 23397, 26919, 32901, 70191, 98703, 210573, 296109, 706873, 2120619, 6361857, 7775603, 19085571, 23326809, 69980427, 209941281]

約数ペア:

[(1, 209941281), (3, 69980427), (9, 23326809), (11, 19085571), (27, 7775603), (33, 6361857), (99, 2120619), (297, 706873), (709, 296109), (997, 210573), (2127, 98703), (2991, 70191), (6381, 32901), (7799, 26919), (8973, 23397), (10967, 19143)]