21566392

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{883}}^1$

素因数の和:1003

約数の個数: 32

約数和(自身を含む): 42007680

約数和(自身を除く): 20441288

約数列:

[1, 2, 4, 8, 43, 71, 86, 142, 172, 284, 344, 568, 883, 1766, 3053, 3532, 6106, 7064, 12212, 24424, 37969, 62693, 75938, 125386, 151876, 250772, 303752, 501544, 2695799, 5391598, 10783196, 21566392]

約数ペア:

[(1, 21566392), (2, 10783196), (4, 5391598), (8, 2695799), (43, 501544), (71, 303752), (86, 250772), (142, 151876), (172, 125386), (284, 75938), (344, 62693), (568, 37969), (883, 24424), (1766, 12212), (3053, 7064), (3532, 6106)]