20209156

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6469}}^1$

素因数の和:6555

約数の個数: 24

約数和(自身を含む): 39130560

約数和(自身を除く): 18921404

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6469, 12938, 25876, 71159, 142318, 284636, 459299, 918598, 1837196, 5052289, 10104578, 20209156]

約数ペア:

[(1, 20209156), (2, 10104578), (4, 5052289), (11, 1837196), (22, 918598), (44, 459299), (71, 284636), (142, 142318), (284, 71159), (781, 25876), (1562, 12938), (3124, 6469)]