18742239

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 29019840

約数和(自身を除く): 10277601

約数列:

[1, 3, 9, 27, 37, 73, 111, 219, 257, 333, 657, 771, 999, 1971, 2313, 2701, 6939, 8103, 9509, 18761, 24309, 28527, 56283, 72927, 85581, 168849, 256743, 506547, 694157, 2082471, 6247413, 18742239]

約数ペア:

[(1, 18742239), (3, 6247413), (9, 2082471), (27, 694157), (37, 506547), (73, 256743), (111, 168849), (219, 85581), (257, 72927), (333, 56283), (657, 28527), (771, 24309), (999, 18761), (1971, 9509), (2313, 8103), (2701, 6939)]