20790147

素因数分解:

$3^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{2297}}^1$

素因数の和:2738

約数の個数: 16

約数和(自身を含む): 31767552

約数和(自身を除く): 10977405

約数列:

[1, 3, 7, 21, 431, 1293, 2297, 3017, 6891, 9051, 16079, 48237, 990007, 2970021, 6930049, 20790147]

約数ペア:

[(1, 20790147), (3, 6930049), (7, 2970021), (21, 990007), (431, 48237), (1293, 16079), (2297, 9051), (3017, 6891)]