19992020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{34469}}^1$

素因数の和:34507

約数の個数: 24

約数和(自身を含む): 43432200

約数和(自身を除く): 23440180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 34469, 68938, 137876, 172345, 344690, 689380, 999601, 1999202, 3998404, 4998005, 9996010, 19992020]

約数ペア:

[(1, 19992020), (2, 9996010), (4, 4998005), (5, 3998404), (10, 1999202), (20, 999601), (29, 689380), (58, 344690), (116, 172345), (145, 137876), (290, 68938), (580, 34469)]