20644545

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4261}}^1$

素因数の和:4305

約数の個数: 32

約数和(自身を含む): 36823680

約数和(自身を除く): 16179135

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4261, 4845, 12783, 21305, 63915, 72437, 80959, 217311, 242877, 362185, 404795, 1086555, 1214385, 1376303, 4128909, 6881515, 20644545]

約数ペア:

[(1, 20644545), (3, 6881515), (5, 4128909), (15, 1376303), (17, 1214385), (19, 1086555), (51, 404795), (57, 362185), (85, 242877), (95, 217311), (255, 80959), (285, 72437), (323, 63915), (969, 21305), (1615, 12783), (4261, 4845)]