640917908

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{27107}}^1$

素因数の和:27391

約数の個数: 24

約数和(自身を含む): 1174969152

約数和(自身を除く): 534051244

約数列:

[1, 2, 4, 23, 46, 92, 257, 514, 1028, 5911, 11822, 23644, 27107, 54214, 108428, 623461, 1246922, 2493844, 6966499, 13932998, 27865996, 160229477, 320458954, 640917908]

約数ペア:

[(1, 640917908), (2, 320458954), (4, 160229477), (23, 27865996), (46, 13932998), (92, 6966499), (257, 2493844), (514, 1246922), (1028, 623461), (5911, 108428), (11822, 54214), (23644, 27107)]