28820253

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 23434467

約数列:

[1, 3, 7, 11, 17, 21, 33, 41, 51, 77, 119, 123, 179, 187, 231, 287, 357, 451, 537, 561, 697, 861, 1253, 1309, 1353, 1969, 2091, 3043, 3157, 3759, 3927, 4879, 5907, 7339, 7667, 9129, 9471, 13783, 14637, 21301, 22017, 23001, 33473, 41349, 51373, 53669, 63903, 80729, 100419, 124763, 154119, 161007, 234311, 242187, 374289, 565103, 702933, 873341, 1372393, 1695309, 2620023, 4117179, 9606751, 28820253]

約数ペア:

[(1, 28820253), (3, 9606751), (7, 4117179), (11, 2620023), (17, 1695309), (21, 1372393), (33, 873341), (41, 702933), (51, 565103), (77, 374289), (119, 242187), (123, 234311), (179, 161007), (187, 154119), (231, 124763), (287, 100419), (357, 80729), (451, 63903), (537, 53669), (561, 51373), (697, 41349), (861, 33473), (1253, 23001), (1309, 22017), (1353, 21301), (1969, 14637), (2091, 13783), (3043, 9471), (3157, 9129), (3759, 7667), (3927, 7339), (4879, 5907)]