18855681

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 28344960

約数和(自身を除く): 9489279

約数列:

[1, 3, 13, 37, 39, 73, 111, 179, 219, 481, 537, 949, 1443, 2327, 2701, 2847, 6623, 6981, 8103, 13067, 19869, 35113, 39201, 86099, 105339, 169871, 258297, 483479, 509613, 1450437, 6285227, 18855681]

約数ペア:

[(1, 18855681), (3, 6285227), (13, 1450437), (37, 509613), (39, 483479), (73, 258297), (111, 169871), (179, 105339), (219, 86099), (481, 39201), (537, 35113), (949, 19869), (1443, 13067), (2327, 8103), (2701, 6981), (2847, 6623)]