19871054

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{19991}}^1$

素因数の和:20071

約数の個数: 16

約数和(自身を含む): 34546176

約数和(自身を除く): 14675122

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 19991, 39982, 139937, 279874, 1419361, 2838722, 9935527, 19871054]

約数ペア:

[(1, 19871054), (2, 9935527), (7, 2838722), (14, 1419361), (71, 279874), (142, 139937), (497, 39982), (994, 19991)]