21000427978

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^2\times {\mathrm{246907}}^1$

素因数の和:247018

約数の個数: 24

約数和(自身を含む): 33652572768

約数和(自身を除く): 12652144790

約数列:

[1, 2, 23, 43, 46, 86, 989, 1849, 1978, 3698, 42527, 85054, 246907, 493814, 5678861, 10617001, 11357722, 21234002, 244191023, 456531043, 488382046, 913062086, 10500213989, 21000427978]

約数ペア:

[(1, 21000427978), (2, 10500213989), (23, 913062086), (43, 488382046), (46, 456531043), (86, 244191023), (989, 21234002), (1849, 11357722), (1978, 10617001), (3698, 5678861), (42527, 493814), (85054, 246907)]