20078901

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:346

約数の個数: 32

約数和(自身を含む): 31008000

約数和(自身を除く): 10929099

約数列:

[1, 3, 9, 27, 37, 101, 111, 199, 303, 333, 597, 909, 999, 1791, 2727, 3737, 5373, 7363, 11211, 20099, 22089, 33633, 60297, 66267, 100899, 180891, 198801, 542673, 743663, 2230989, 6692967, 20078901]

約数ペア:

[(1, 20078901), (3, 6692967), (9, 2230989), (27, 743663), (37, 542673), (101, 198801), (111, 180891), (199, 100899), (303, 66267), (333, 60297), (597, 33633), (909, 22089), (999, 20099), (1791, 11211), (2727, 7363), (3737, 5373)]