28765863

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 49420800

約数和(自身を除く): 20654937

約数列:

[1, 3, 7, 9, 21, 59, 63, 71, 109, 177, 213, 327, 413, 497, 531, 639, 763, 981, 1239, 1491, 2289, 3717, 4189, 4473, 6431, 6867, 7739, 12567, 19293, 23217, 29323, 37701, 45017, 54173, 57879, 69651, 87969, 135051, 162519, 263907, 405153, 456601, 487557, 1369803, 3196207, 4109409, 9588621, 28765863]

約数ペア:

[(1, 28765863), (3, 9588621), (7, 4109409), (9, 3196207), (21, 1369803), (59, 487557), (63, 456601), (71, 405153), (109, 263907), (177, 162519), (213, 135051), (327, 87969), (413, 69651), (497, 57879), (531, 54173), (639, 45017), (763, 37701), (981, 29323), (1239, 23217), (1491, 19293), (2289, 12567), (3717, 7739), (4189, 6867), (4473, 6431)]