21949697

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 28131552

約数和(自身を除く): 6181855

約数列:

[1, 7, 11, 49, 77, 193, 211, 539, 1351, 1477, 2123, 2321, 9457, 10339, 14861, 16247, 40723, 104027, 113729, 285061, 447953, 1995427, 3135671, 21949697]

約数ペア:

[(1, 21949697), (7, 3135671), (11, 1995427), (49, 447953), (77, 285061), (193, 113729), (211, 104027), (539, 40723), (1351, 16247), (1477, 14861), (2123, 10339), (2321, 9457)]