81580499

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 114401280

約数和(自身を除く): 32820781

約数列:

[1, 7, 11, 13, 31, 77, 91, 121, 143, 217, 239, 341, 403, 847, 1001, 1573, 1673, 2387, 2629, 2821, 3107, 3751, 4433, 7409, 11011, 18403, 21749, 26257, 28919, 31031, 34177, 48763, 51863, 81499, 96317, 202433, 239239, 341341, 375947, 570493, 674219, 896489, 1059487, 2631629, 6275423, 7416409, 11654357, 81580499]

約数ペア:

[(1, 81580499), (7, 11654357), (11, 7416409), (13, 6275423), (31, 2631629), (77, 1059487), (91, 896489), (121, 674219), (143, 570493), (217, 375947), (239, 341341), (341, 239239), (403, 202433), (847, 96317), (1001, 81499), (1573, 51863), (1673, 48763), (2387, 34177), (2629, 31031), (2821, 28919), (3107, 26257), (3751, 21749), (4433, 18403), (7409, 11011)]