21158236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 42311808

約数和(自身を除く): 21153572

約数列:

[1, 2, 4, 11, 22, 43, 44, 53, 86, 106, 172, 211, 212, 422, 473, 583, 844, 946, 1166, 1892, 2279, 2321, 2332, 4558, 4642, 9073, 9116, 9284, 11183, 18146, 22366, 25069, 36292, 44732, 50138, 99803, 100276, 123013, 199606, 246026, 399212, 480869, 492052, 961738, 1923476, 5289559, 10579118, 21158236]

約数ペア:

[(1, 21158236), (2, 10579118), (4, 5289559), (11, 1923476), (22, 961738), (43, 492052), (44, 480869), (53, 399212), (86, 246026), (106, 199606), (172, 123013), (211, 100276), (212, 99803), (422, 50138), (473, 44732), (583, 36292), (844, 25069), (946, 22366), (1166, 18146), (1892, 11183), (2279, 9284), (2321, 9116), (2332, 9073), (4558, 4642)]