19992291

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 30319872

約数和(自身を除く): 10327581

約数列:

[1, 3, 11, 33, 43, 73, 129, 193, 219, 473, 579, 803, 1419, 2123, 2409, 3139, 6369, 8299, 9417, 14089, 24897, 34529, 42267, 91289, 103587, 154979, 273867, 464937, 605827, 1817481, 6664097, 19992291]

約数ペア:

[(1, 19992291), (3, 6664097), (11, 1817481), (33, 605827), (43, 464937), (73, 273867), (129, 154979), (193, 103587), (219, 91289), (473, 42267), (579, 34529), (803, 24897), (1419, 14089), (2123, 9417), (2409, 8299), (3139, 6369)]