19998544

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{4019}}^1$

素因数の和:4338

約数の個数: 20

約数和(自身を含む): 38881440

約数和(自身を除く): 18882896

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4019, 4976, 8038, 16076, 32152, 64304, 1249909, 2499818, 4999636, 9999272, 19998544]

約数ペア:

[(1, 19998544), (2, 9999272), (4, 4999636), (8, 2499818), (16, 1249909), (311, 64304), (622, 32152), (1244, 16076), (2488, 8038), (4019, 4976)]