28798623

素因数分解:

$3^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:537

約数の個数: 48

約数和(自身を含む): 51168000

約数和(自身を除く): 22369377

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 343, 399, 441, 491, 931, 1029, 1197, 1473, 2793, 3087, 3437, 4419, 6517, 8379, 9329, 10311, 19551, 24059, 27987, 30933, 58653, 65303, 72177, 83961, 168413, 195909, 216531, 457121, 505239, 587727, 1371363, 1515717, 3199847, 4114089, 9599541, 28798623]

約数ペア:

[(1, 28798623), (3, 9599541), (7, 4114089), (9, 3199847), (19, 1515717), (21, 1371363), (49, 587727), (57, 505239), (63, 457121), (133, 216531), (147, 195909), (171, 168413), (343, 83961), (399, 72177), (441, 65303), (491, 58653), (931, 30933), (1029, 27987), (1197, 24059), (1473, 19551), (2793, 10311), (3087, 9329), (3437, 8379), (4419, 6517)]