19903377

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{6991}}^1$

素因数の和:7080

約数の個数: 16

約数和(自身を含む): 28974848

約数和(自身を除く): 9071471

約数列:

[1, 3, 13, 39, 73, 219, 949, 2847, 6991, 20973, 90883, 272649, 510343, 1531029, 6634459, 19903377]

約数ペア:

[(1, 19903377), (3, 6634459), (13, 1531029), (39, 510343), (73, 272649), (219, 90883), (949, 20973), (2847, 6991)]