28712871

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 47792160

約数和(自身を除く): 19079289

約数列:

[1, 3, 9, 11, 29, 33, 73, 87, 99, 137, 219, 261, 319, 411, 657, 803, 957, 1233, 1507, 2117, 2409, 2871, 3973, 4521, 6351, 7227, 10001, 11919, 13563, 19053, 23287, 30003, 35757, 43703, 69861, 90009, 110011, 131109, 209583, 290029, 330033, 393327, 870087, 990099, 2610261, 3190319, 9570957, 28712871]

約数ペア:

[(1, 28712871), (3, 9570957), (9, 3190319), (11, 2610261), (29, 990099), (33, 870087), (73, 393327), (87, 330033), (99, 290029), (137, 209583), (219, 131109), (261, 110011), (319, 90009), (411, 69861), (657, 43703), (803, 35757), (957, 30003), (1233, 23287), (1507, 19053), (2117, 13563), (2409, 11919), (2871, 10001), (3973, 7227), (4521, 6351)]