678243344

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{388901}}^1$

素因数の和:389018

約数の個数: 20

約数和(自身を含む): 1326155820

約数和(自身を除く): 647912476

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 388901, 777802, 1555604, 3111208, 6222416, 42390209, 84780418, 169560836, 339121672, 678243344]

約数ペア:

[(1, 678243344), (2, 339121672), (4, 169560836), (8, 84780418), (16, 42390209), (109, 6222416), (218, 3111208), (436, 1555604), (872, 777802), (1744, 388901)]