678747078

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{531101}}^1$

素因数の和:531180

約数の個数: 24

約数和(自身を含む): 1491334416

約数和(自身を除く): 812587338

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 531101, 1062202, 1593303, 3186606, 4779909, 9559818, 37708171, 75416342, 113124513, 226249026, 339373539, 678747078]

約数ペア:

[(1, 678747078), (2, 339373539), (3, 226249026), (6, 113124513), (9, 75416342), (18, 37708171), (71, 9559818), (142, 4779909), (213, 3186606), (426, 1593303), (639, 1062202), (1278, 531101)]