390663938

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{219721}}^1$

素因数の和:219857

約数の個数: 16

約数和(自身を含む): 674985984

約数和(自身を除く): 284322046

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 219721, 439442, 1538047, 3076094, 27904567, 55809134, 195331969, 390663938]

約数ペア:

[(1, 390663938), (2, 195331969), (7, 55809134), (14, 27904567), (127, 3076094), (254, 1538047), (889, 439442), (1778, 219721)]