221004847

素因数分解:

$7^4\times {\mathrm{83}}^1\times {\mathrm{1109}}^1$

素因数の和:1220

約数の個数: 20

約数和(自身を含む): 261165240

約数和(自身を除く): 40160393

約数列:

[1, 7, 49, 83, 343, 581, 1109, 2401, 4067, 7763, 28469, 54341, 92047, 199283, 380387, 644329, 2662709, 4510303, 31572121, 221004847]

約数ペア:

[(1, 221004847), (7, 31572121), (49, 4510303), (83, 2662709), (343, 644329), (581, 380387), (1109, 199283), (2401, 92047), (4067, 54341), (7763, 28469)]