19851982

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1\times {\mathrm{643}}^1$

素因数の和:1047

約数の個数: 16

約数和(自身を含む): 30602880

約数和(自身を除く): 10750898

約数列:

[1, 2, 43, 86, 359, 643, 718, 1286, 15437, 27649, 30874, 55298, 230837, 461674, 9925991, 19851982]

約数ペア:

[(1, 19851982), (2, 9925991), (43, 461674), (86, 230837), (359, 55298), (643, 30874), (718, 27649), (1286, 15437)]