19715199

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3119}}^1$

素因数の和:3179

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 11584641

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3119, 6321, 9357, 21833, 65499, 134117, 152831, 402351, 458493, 938819, 2816457, 6571733, 19715199]

約数ペア:

[(1, 19715199), (3, 6571733), (7, 2816457), (21, 938819), (43, 458493), (49, 402351), (129, 152831), (147, 134117), (301, 65499), (903, 21833), (2107, 9357), (3119, 6321)]