20567911

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 27353088

約数和(自身を除く): 6785177

約数列:

[1, 7, 13, 23, 31, 91, 161, 217, 299, 317, 403, 713, 2093, 2219, 2821, 4121, 4991, 7291, 9269, 9827, 28847, 51037, 64883, 68789, 94783, 127751, 226021, 663481, 894257, 1582147, 2938273, 20567911]

約数ペア:

[(1, 20567911), (7, 2938273), (13, 1582147), (23, 894257), (31, 663481), (91, 226021), (161, 127751), (217, 94783), (299, 68789), (317, 64883), (403, 51037), (713, 28847), (2093, 9827), (2219, 9269), (2821, 7291), (4121, 4991)]