28286973

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{709}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 49620480

約数和(自身を除く): 21333507

約数列:

[1, 3, 9, 11, 13, 31, 33, 39, 93, 99, 117, 143, 279, 341, 403, 429, 709, 1023, 1209, 1287, 2127, 3069, 3627, 4433, 6381, 7799, 9217, 13299, 21979, 23397, 27651, 39897, 65937, 70191, 82953, 101387, 197811, 241769, 285727, 304161, 725307, 857181, 912483, 2175921, 2571543, 3142997, 9428991, 28286973]

約数ペア:

[(1, 28286973), (3, 9428991), (9, 3142997), (11, 2571543), (13, 2175921), (31, 912483), (33, 857181), (39, 725307), (93, 304161), (99, 285727), (117, 241769), (143, 197811), (279, 101387), (341, 82953), (403, 70191), (429, 65937), (709, 39897), (1023, 27651), (1209, 23397), (1287, 21979), (2127, 13299), (3069, 9217), (3627, 7799), (4433, 6381)]