20679001

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 26357760

約数和(自身を除く): 5678759

約数列:

[1, 7, 23, 29, 43, 103, 161, 203, 301, 667, 721, 989, 1247, 2369, 2987, 4429, 4669, 6923, 8729, 16583, 20909, 28681, 31003, 68701, 101867, 128441, 200767, 480907, 713069, 899087, 2954143, 20679001]

約数ペア:

[(1, 20679001), (7, 2954143), (23, 899087), (29, 713069), (43, 480907), (103, 200767), (161, 128441), (203, 101867), (301, 68701), (667, 31003), (721, 28681), (989, 20909), (1247, 16583), (2369, 8729), (2987, 6923), (4429, 4669)]