20752468

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:888

約数の個数: 36

約数和(自身を含む): 40721940

約数和(自身を除く): 19969472

約数列:

[1, 2, 4, 11, 22, 44, 53, 106, 121, 212, 242, 484, 583, 809, 1166, 1618, 2332, 3236, 6413, 8899, 12826, 17798, 25652, 35596, 42877, 85754, 97889, 171508, 195778, 391556, 471647, 943294, 1886588, 5188117, 10376234, 20752468]

約数ペア:

[(1, 20752468), (2, 10376234), (4, 5188117), (11, 1886588), (22, 943294), (44, 471647), (53, 391556), (106, 195778), (121, 171508), (212, 97889), (242, 85754), (484, 42877), (583, 35596), (809, 25652), (1166, 17798), (1618, 12826), (2332, 8899), (3236, 6413)]