28821261

素因数分解:

$3^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{757}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 46086400

約数和(自身を除く): 17265139

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 343, 757, 777, 1029, 1813, 2271, 5299, 5439, 12691, 15897, 28009, 37093, 38073, 84027, 111279, 196063, 259651, 588189, 778953, 1372441, 4117323, 9607087, 28821261]

約数ペア:

[(1, 28821261), (3, 9607087), (7, 4117323), (21, 1372441), (37, 778953), (49, 588189), (111, 259651), (147, 196063), (259, 111279), (343, 84027), (757, 38073), (777, 37093), (1029, 28009), (1813, 15897), (2271, 12691), (5299, 5439)]