71981656

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{209249}}^1$

素因数の和:209298

約数の個数: 16

約数和(自身を含む): 138105000

約数和(自身を除く): 66123344

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 209249, 418498, 836996, 1673992, 8997707, 17995414, 35990828, 71981656]

約数ペア:

[(1, 71981656), (2, 35990828), (4, 17995414), (8, 8997707), (43, 1673992), (86, 836996), (172, 418498), (344, 209249)]