31097781

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 53656512

約数和(自身を除く): 22558731

約数列:

[1, 3, 9, 11, 13, 33, 39, 73, 99, 117, 143, 219, 331, 429, 657, 803, 949, 993, 1287, 2409, 2847, 2979, 3641, 4303, 7227, 8541, 10439, 10923, 12909, 24163, 31317, 32769, 38727, 47333, 72489, 93951, 141999, 217467, 265793, 314119, 425997, 797379, 942357, 2392137, 2827071, 3455309, 10365927, 31097781]

約数ペア:

[(1, 31097781), (3, 10365927), (9, 3455309), (11, 2827071), (13, 2392137), (33, 942357), (39, 797379), (73, 425997), (99, 314119), (117, 265793), (143, 217467), (219, 141999), (331, 93951), (429, 72489), (657, 47333), (803, 38727), (949, 32769), (993, 31317), (1287, 24163), (2409, 12909), (2847, 10923), (2979, 10439), (3641, 8541), (4303, 7227)]