21591256

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{65827}}^1$

素因数の和:65874

約数の個数: 16

約数和(自身を含む): 41471640

約数和(自身を除く): 19880384

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 65827, 131654, 263308, 526616, 2698907, 5397814, 10795628, 21591256]

約数ペア:

[(1, 21591256), (2, 10795628), (4, 5397814), (8, 2698907), (41, 526616), (82, 263308), (164, 131654), (328, 65827)]