20988669

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1753}}^1$

素因数の和:2076

約数の個数: 16

約数和(自身を含む): 30252992

約数和(自身を除く): 9264323

約数列:

[1, 3, 13, 39, 307, 921, 1753, 3991, 5259, 11973, 22789, 68367, 538171, 1614513, 6996223, 20988669]

約数ペア:

[(1, 20988669), (3, 6996223), (13, 1614513), (39, 538171), (307, 68367), (921, 22789), (1753, 11973), (3991, 5259)]