81561403

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{727}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 107347968

約数和(自身を除く): 25786565

約数列:

[1, 7, 11, 31, 47, 77, 217, 329, 341, 517, 727, 1457, 2387, 3619, 5089, 7997, 10199, 16027, 22537, 34169, 55979, 112189, 157759, 239183, 247907, 375859, 1059239, 1735349, 2631013, 7414673, 11651629, 81561403]

約数ペア:

[(1, 81561403), (7, 11651629), (11, 7414673), (31, 2631013), (47, 1735349), (77, 1059239), (217, 375859), (329, 247907), (341, 239183), (517, 157759), (727, 112189), (1457, 55979), (2387, 34169), (3619, 22537), (5089, 16027), (7997, 10199)]