81777717

素因数分解:

$3^2\times 7^3\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:535

約数の個数: 48

約数和(自身を含む): 140400000

約数和(自身を除く): 58622283

約数列:

[1, 3, 7, 9, 21, 49, 59, 63, 147, 177, 343, 413, 441, 449, 531, 1029, 1239, 1347, 2891, 3087, 3143, 3717, 4041, 8673, 9429, 20237, 22001, 26019, 26491, 28287, 60711, 66003, 79473, 154007, 182133, 185437, 198009, 238419, 462021, 556311, 1298059, 1386063, 1668933, 3894177, 9086413, 11682531, 27259239, 81777717]

約数ペア:

[(1, 81777717), (3, 27259239), (7, 11682531), (9, 9086413), (21, 3894177), (49, 1668933), (59, 1386063), (63, 1298059), (147, 556311), (177, 462021), (343, 238419), (413, 198009), (441, 185437), (449, 182133), (531, 154007), (1029, 79473), (1239, 66003), (1347, 60711), (2891, 28287), (3087, 26491), (3143, 26019), (3717, 22001), (4041, 20237), (8673, 9429)]