28387989

素因数分解:

$3^6\times 7^1\times {\mathrm{5563}}^1$

素因数の和:5588

約数の個数: 28

約数和(自身を含む): 48651616

約数和(自身を除く): 20263627

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 5563, 16689, 38941, 50067, 116823, 150201, 350469, 450603, 1051407, 1351809, 3154221, 4055427, 9462663, 28387989]

約数ペア:

[(1, 28387989), (3, 9462663), (7, 4055427), (9, 3154221), (21, 1351809), (27, 1051407), (63, 450603), (81, 350469), (189, 150201), (243, 116823), (567, 50067), (729, 38941), (1701, 16689), (5103, 5563)]