21688016

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4723}}^1$

素因数の和:4779

約数の個数: 40

約数和(自身を含む): 49205184

約数和(自身を除く): 27517168

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4592, 4723, 9446, 18892, 33061, 37784, 66122, 75568, 132244, 193643, 264488, 387286, 528976, 774572, 1355501, 1549144, 2711002, 3098288, 5422004, 10844008, 21688016]

約数ペア:

[(1, 21688016), (2, 10844008), (4, 5422004), (7, 3098288), (8, 2711002), (14, 1549144), (16, 1355501), (28, 774572), (41, 528976), (56, 387286), (82, 264488), (112, 193643), (164, 132244), (287, 75568), (328, 66122), (574, 37784), (656, 33061), (1148, 18892), (2296, 9446), (4592, 4723)]