18998427

素因数分解:

$3^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{499}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 30400000

約数和(自身を除く): 11401573

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 343, 499, 777, 1029, 1497, 1813, 3493, 5439, 10479, 12691, 18463, 24451, 38073, 55389, 73353, 129241, 171157, 387723, 513471, 904687, 2714061, 6332809, 18998427]

約数ペア:

[(1, 18998427), (3, 6332809), (7, 2714061), (21, 904687), (37, 513471), (49, 387723), (111, 171157), (147, 129241), (259, 73353), (343, 55389), (499, 38073), (777, 24451), (1029, 18463), (1497, 12691), (1813, 10479), (3493, 5439)]