20900967

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 30497280

約数和(自身を除く): 9596313

約数列:

[1, 3, 29, 37, 43, 87, 111, 129, 151, 453, 1073, 1247, 1591, 3219, 3741, 4379, 4773, 5587, 6493, 13137, 16761, 19479, 46139, 138417, 162023, 188297, 240241, 486069, 564891, 720723, 6966989, 20900967]

約数ペア:

[(1, 20900967), (3, 6966989), (29, 720723), (37, 564891), (43, 486069), (87, 240241), (111, 188297), (129, 162023), (151, 138417), (453, 46139), (1073, 19479), (1247, 16761), (1591, 13137), (3219, 6493), (3741, 5587), (4379, 4773)]