21691292

素因数分解:

$2^2\times 7^1\times {\mathrm{601}}^1\times {\mathrm{1289}}^1$

素因数の和:1901

約数の個数: 24

約数和(自身を含む): 43488480

約数和(自身を除く): 21797188

約数列:

[1, 2, 4, 7, 14, 28, 601, 1202, 1289, 2404, 2578, 4207, 5156, 8414, 9023, 16828, 18046, 36092, 774689, 1549378, 3098756, 5422823, 10845646, 21691292]

約数ペア:

[(1, 21691292), (2, 10845646), (4, 5422823), (7, 3098756), (14, 1549378), (28, 774689), (601, 36092), (1202, 18046), (1289, 16828), (2404, 9023), (2578, 8414), (4207, 5156)]