18189117

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{5477}}^1$

素因数の和:5530

約数の個数: 20

約数和(自身を含む): 27839196

約数和(自身を除く): 9650079

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 5477, 16431, 49293, 147879, 224557, 443637, 673671, 2021013, 6063039, 18189117]

約数ペア:

[(1, 18189117), (3, 6063039), (9, 2021013), (27, 673671), (41, 443637), (81, 224557), (123, 147879), (369, 49293), (1107, 16431), (3321, 5477)]