20998586

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{65213}}^1$

素因数の和:65245

約数の個数: 16

約数和(自身を含む): 37563264

約数和(自身を除く): 16564678

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 65213, 130426, 456491, 912982, 1499899, 2999798, 10499293, 20998586]

約数ペア:

[(1, 20998586), (2, 10499293), (7, 2999798), (14, 1499899), (23, 912982), (46, 456491), (161, 130426), (322, 65213)]