21992392

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1357

約数の個数: 32

約数和(自身を含む): 43200000

約数和(自身を除く): 21207608

約数列:

[1, 2, 4, 8, 31, 62, 71, 124, 142, 248, 284, 568, 1249, 2201, 2498, 4402, 4996, 8804, 9992, 17608, 38719, 77438, 88679, 154876, 177358, 309752, 354716, 709432, 2749049, 5498098, 10996196, 21992392]

約数ペア:

[(1, 21992392), (2, 10996196), (4, 5498098), (8, 2749049), (31, 709432), (62, 354716), (71, 309752), (124, 177358), (142, 154876), (248, 88679), (284, 77438), (568, 38719), (1249, 17608), (2201, 9992), (2498, 8804), (4402, 4996)]