28080000008

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{20681}}^1\times {\mathrm{3947}}^1$

素因数の和:24677

約数の個数: 32

約数和(自身を含む): 53890673760

約数和(自身を除く): 25810673752

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 3947, 7894, 15788, 20681, 31576, 41362, 82724, 165448, 169721, 339442, 678884, 889283, 1357768, 1778566, 3557132, 7114264, 81627907, 163255814, 326511628, 653023256, 3510000001, 7020000002, 14040000004, 28080000008]

約数ペア:

[(1, 28080000008), (2, 14040000004), (4, 7020000002), (8, 3510000001), (43, 653023256), (86, 326511628), (172, 163255814), (344, 81627907), (3947, 7114264), (7894, 3557132), (15788, 1778566), (20681, 1357768), (31576, 889283), (41362, 678884), (82724, 339442), (165448, 169721)]