19991769

素因数分解:

$3^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{1553}}^1$

素因数の和:2176

約数の個数: 16

約数和(自身を含む): 30532992

約数和(自身を除く): 10541223

約数列:

[1, 3, 7, 21, 613, 1553, 1839, 4291, 4659, 10871, 12873, 32613, 951989, 2855967, 6663923, 19991769]

約数ペア:

[(1, 19991769), (3, 6663923), (7, 2855967), (21, 951989), (613, 32613), (1553, 12873), (1839, 10871), (4291, 4659)]