2189781

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:194

約数の個数: 32

約数和(自身を含む): 3623040

約数和(自身を除く): 1433259

約数列:

[1, 3, 9, 11, 27, 33, 73, 99, 101, 219, 297, 303, 657, 803, 909, 1111, 1971, 2409, 2727, 3333, 7227, 7373, 9999, 21681, 22119, 29997, 66357, 81103, 199071, 243309, 729927, 2189781]

約数ペア:

[(1, 2189781), (3, 729927), (9, 243309), (11, 199071), (27, 81103), (33, 66357), (73, 29997), (99, 22119), (101, 21681), (219, 9999), (297, 7373), (303, 7227), (657, 3333), (803, 2727), (909, 2409), (1111, 1971)]