278749863

素因数分解:

$3^3\times 7^1\times {\mathrm{863}}^1\times {\mathrm{1709}}^1$

素因数の和:2588

約数の個数: 32

約数和(自身を含む): 472780800

約数和(自身を除く): 194030937

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 863, 1709, 2589, 5127, 6041, 7767, 11963, 15381, 18123, 23301, 35889, 46143, 54369, 107667, 163107, 323001, 1474867, 4424601, 10324069, 13273803, 30972207, 39821409, 92916621, 278749863]

約数ペア:

[(1, 278749863), (3, 92916621), (7, 39821409), (9, 30972207), (21, 13273803), (27, 10324069), (63, 4424601), (189, 1474867), (863, 323001), (1709, 163107), (2589, 107667), (5127, 54369), (6041, 46143), (7767, 35889), (11963, 23301), (15381, 18123)]