20506563

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 37380096

約数和(自身を除く): 16873533

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 127, 231, 233, 381, 693, 699, 889, 1143, 1397, 1631, 2097, 2563, 2667, 4191, 4893, 7689, 8001, 9779, 12573, 14679, 17941, 23067, 29337, 29591, 53823, 88011, 88773, 161469, 207137, 266319, 325501, 621411, 976503, 1864233, 2278507, 2929509, 6835521, 20506563]

約数ペア:

[(1, 20506563), (3, 6835521), (7, 2929509), (9, 2278507), (11, 1864233), (21, 976503), (33, 621411), (63, 325501), (77, 266319), (99, 207137), (127, 161469), (231, 88773), (233, 88011), (381, 53823), (693, 29591), (699, 29337), (889, 23067), (1143, 17941), (1397, 14679), (1631, 12573), (2097, 9779), (2563, 8001), (2667, 7689), (4191, 4893)]