28806381

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{647}}^1$

素因数の和:770

約数の個数: 32

約数和(自身を含む): 45722880

約数和(自身を除く): 16916499

約数列:

[1, 3, 9, 17, 27, 51, 97, 153, 291, 459, 647, 873, 1649, 1941, 2619, 4947, 5823, 10999, 14841, 17469, 32997, 44523, 62759, 98991, 188277, 296973, 564831, 1066903, 1694493, 3200709, 9602127, 28806381]

約数ペア:

[(1, 28806381), (3, 9602127), (9, 3200709), (17, 1694493), (27, 1066903), (51, 564831), (97, 296973), (153, 188277), (291, 98991), (459, 62759), (647, 44523), (873, 32997), (1649, 17469), (1941, 14841), (2619, 10999), (4947, 5823)]