20217463

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2141}}^1$

素因数の和:2238

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 4458377

約数列:

[1, 7, 19, 71, 133, 497, 1349, 2141, 9443, 14987, 40679, 152011, 284753, 1064077, 2888209, 20217463]

約数ペア:

[(1, 20217463), (7, 2888209), (19, 1064077), (71, 284753), (133, 152011), (497, 40679), (1349, 14987), (2141, 9443)]