20648719

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2203}}^1$

素因数の和:2326

約数の個数: 16

約数和(自身を含む): 25672192

約数和(自身を除く): 5023473

約数列:

[1, 7, 13, 91, 103, 721, 1339, 2203, 9373, 15421, 28639, 200473, 226909, 1588363, 2949817, 20648719]

約数ペア:

[(1, 20648719), (7, 2949817), (13, 1588363), (91, 226909), (103, 200473), (721, 28639), (1339, 15421), (2203, 9373)]