19990404987

素因数分解:

$3^1\times 7^1\times {\mathrm{14251}}^1\times {\mathrm{66797}}^1$

素因数の和:81058

約数の個数: 16

約数和(自身を含む): 30464163072

約数和(自身を除く): 10473758085

約数列:

[1, 3, 7, 21, 14251, 42753, 66797, 99757, 200391, 299271, 467579, 1402737, 951924047, 2855772141, 6663468329, 19990404987]

約数ペア:

[(1, 19990404987), (3, 6663468329), (7, 2855772141), (21, 951924047), (14251, 1402737), (42753, 467579), (66797, 299271), (99757, 200391)]