81221668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{42929}}^1$

素因数の和:42987

約数の個数: 24

約数和(自身を含む): 158669280

約数和(自身を除く): 77447612

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 42929, 85858, 171716, 472219, 944438, 1845947, 1888876, 3691894, 7383788, 20305417, 40610834, 81221668]

約数ペア:

[(1, 81221668), (2, 40610834), (4, 20305417), (11, 7383788), (22, 3691894), (43, 1888876), (44, 1845947), (86, 944438), (172, 472219), (473, 171716), (946, 85858), (1892, 42929)]