290878209

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{49193}}^1$

素因数の和:49278

約数の個数: 20

約数和(自身を含む): 440483076

約数和(自身を除く): 149604867

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 5913, 49193, 147579, 442737, 1328211, 3591089, 3984633, 10773267, 32319801, 96959403, 290878209]

約数ペア:

[(1, 290878209), (3, 96959403), (9, 32319801), (27, 10773267), (73, 3984633), (81, 3591089), (219, 1328211), (657, 442737), (1971, 147579), (5913, 49193)]