18178533

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 28558080

約数和(自身を除く): 10379547

約数列:

[1, 3, 9, 23, 27, 69, 73, 207, 219, 401, 621, 657, 1203, 1679, 1971, 3609, 5037, 9223, 10827, 15111, 27669, 29273, 45333, 83007, 87819, 249021, 263457, 673279, 790371, 2019837, 6059511, 18178533]

約数ペア:

[(1, 18178533), (3, 6059511), (9, 2019837), (23, 790371), (27, 673279), (69, 263457), (73, 249021), (207, 87819), (219, 83007), (401, 45333), (621, 29273), (657, 27669), (1203, 15111), (1679, 10827), (1971, 9223), (3609, 5037)]