209796656

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{304937}}^1$

素因数の和:304988

約数の個数: 20

約数和(自身を含む): 415935432

約数和(自身を除く): 206138776

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 304937, 609874, 1219748, 2439496, 4878992, 13112291, 26224582, 52449164, 104898328, 209796656]

約数ペア:

[(1, 209796656), (2, 104898328), (4, 52449164), (8, 26224582), (16, 13112291), (43, 4878992), (86, 2439496), (172, 1219748), (344, 609874), (688, 304937)]