210680821978

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{870581909}}^1$

素因数の和:870581933

約数の個数: 12

約数和(自身を含む): 347362182090

約数和(自身を除く): 136681360112

約数列:

[1, 2, 11, 22, 121, 242, 870581909, 1741163818, 9576400999, 19152801998, 105340410989, 210680821978]

約数ペア:

[(1, 210680821978), (2, 105340410989), (11, 19152801998), (22, 9576400999), (121, 1741163818), (242, 870581909)]