81045920

素因数分解:

$2^5\times 5^1\times {\mathrm{506537}}^1$

素因数の和:506552

約数の個数: 24

約数和(自身を含む): 191471364

約数和(自身を除く): 110425444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 506537, 1013074, 2026148, 2532685, 4052296, 5065370, 8104592, 10130740, 16209184, 20261480, 40522960, 81045920]

約数ペア:

[(1, 81045920), (2, 40522960), (4, 20261480), (5, 16209184), (8, 10130740), (10, 8104592), (16, 5065370), (20, 4052296), (32, 2532685), (40, 2026148), (80, 1013074), (160, 506537)]