685936

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1048

約数の個数: 20

約数和(自身を含む): 1361272

約数和(自身を除く): 675336

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 997, 1994, 3988, 7976, 15952, 42871, 85742, 171484, 342968, 685936]

約数ペア:

[(1, 685936), (2, 342968), (4, 171484), (8, 85742), (16, 42871), (43, 15952), (86, 7976), (172, 3988), (344, 1994), (688, 997)]