28505799

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1747}}^1$

素因数の和:1804

約数の個数: 36

約数和(自身を含む): 49220184

約数和(自身を除く): 20714385

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 111, 147, 259, 333, 441, 777, 1747, 1813, 2331, 5241, 5439, 12229, 15723, 16317, 36687, 64639, 85603, 110061, 193917, 256809, 452473, 581751, 770427, 1357419, 3167311, 4072257, 9501933, 28505799]

約数ペア:

[(1, 28505799), (3, 9501933), (7, 4072257), (9, 3167311), (21, 1357419), (37, 770427), (49, 581751), (63, 452473), (111, 256809), (147, 193917), (259, 110061), (333, 85603), (441, 64639), (777, 36687), (1747, 16317), (1813, 15723), (2331, 12229), (5241, 5439)]