20529971

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{929}}^1$

素因数の和:995

約数の個数: 24

約数和(自身を含む): 26717040

約数和(自身を除く): 6187069

約数列:

[1, 7, 11, 41, 49, 77, 287, 451, 539, 929, 2009, 3157, 6503, 10219, 22099, 38089, 45521, 71533, 266623, 418979, 500731, 1866361, 2932853, 20529971]

約数ペア:

[(1, 20529971), (7, 2932853), (11, 1866361), (41, 500731), (49, 418979), (77, 266623), (287, 71533), (451, 45521), (539, 38089), (929, 22099), (2009, 10219), (3157, 6503)]