20934837

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1777}}^1$

素因数の和:1818

約数の個数: 48

約数和(自身を含む): 39940992

約数和(自身を除く): 19006155

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 119, 153, 187, 231, 357, 561, 693, 1071, 1309, 1683, 1777, 3927, 5331, 11781, 12439, 15993, 19547, 30209, 37317, 58641, 90627, 111951, 136829, 175923, 211463, 271881, 332299, 410487, 634389, 996897, 1231461, 1903167, 2326093, 2990691, 6978279, 20934837]

約数ペア:

[(1, 20934837), (3, 6978279), (7, 2990691), (9, 2326093), (11, 1903167), (17, 1231461), (21, 996897), (33, 634389), (51, 410487), (63, 332299), (77, 271881), (99, 211463), (119, 175923), (153, 136829), (187, 111951), (231, 90627), (357, 58641), (561, 37317), (693, 30209), (1071, 19547), (1309, 15993), (1683, 12439), (1777, 11781), (3927, 5331)]