28093989

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 50780160

約数和(自身を除く): 22686171

約数列:

[1, 3, 7, 11, 19, 21, 33, 37, 57, 77, 111, 133, 173, 209, 231, 259, 399, 407, 519, 627, 703, 777, 1211, 1221, 1463, 1903, 2109, 2849, 3287, 3633, 4389, 4921, 5709, 6401, 7733, 8547, 9861, 13321, 14763, 19203, 23009, 23199, 36157, 39963, 44807, 54131, 69027, 70411, 108471, 121619, 134421, 162393, 211233, 253099, 364857, 492877, 759297, 851333, 1337809, 1478631, 2553999, 4013427, 9364663, 28093989]

約数ペア:

[(1, 28093989), (3, 9364663), (7, 4013427), (11, 2553999), (19, 1478631), (21, 1337809), (33, 851333), (37, 759297), (57, 492877), (77, 364857), (111, 253099), (133, 211233), (173, 162393), (209, 134421), (231, 121619), (259, 108471), (399, 70411), (407, 69027), (519, 54131), (627, 44807), (703, 39963), (777, 36157), (1211, 23199), (1221, 23009), (1463, 19203), (1903, 14763), (2109, 13321), (2849, 9861), (3287, 8547), (3633, 7733), (4389, 6401), (4921, 5709)]