20804076464

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{499}}^1\times {\mathrm{19891}}^1$

素因数の和:20529

約数の個数: 40

約数和(自身を含む): 40699032000

約数和(自身を除く): 19894955536

約数列:

[1, 2, 4, 8, 16, 131, 262, 499, 524, 998, 1048, 1996, 2096, 3992, 7984, 19891, 39782, 65369, 79564, 130738, 159128, 261476, 318256, 522952, 1045904, 2605721, 5211442, 9925609, 10422884, 19851218, 20845768, 39702436, 41691536, 79404872, 158809744, 1300254779, 2600509558, 5201019116, 10402038232, 20804076464]

約数ペア:

[(1, 20804076464), (2, 10402038232), (4, 5201019116), (8, 2600509558), (16, 1300254779), (131, 158809744), (262, 79404872), (499, 41691536), (524, 39702436), (998, 20845768), (1048, 19851218), (1996, 10422884), (2096, 9925609), (3992, 5211442), (7984, 2605721), (19891, 1045904), (39782, 522952), (65369, 318256), (79564, 261476), (130738, 159128)]