20162804080

素因数分解:

$2^4\times 5^1\times {\mathrm{809}}^1\times {\mathrm{311539}}^1$

素因数の和:312361

約数の個数: 40

約数和(自身を含む): 46936616400

約数和(自身を除く): 26773812320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809, 1618, 3236, 4045, 6472, 8090, 12944, 16180, 32360, 64720, 311539, 623078, 1246156, 1557695, 2492312, 3115390, 4984624, 6230780, 12461560, 24923120, 252035051, 504070102, 1008140204, 1260175255, 2016280408, 2520350510, 4032560816, 5040701020, 10081402040, 20162804080]

約数ペア:

[(1, 20162804080), (2, 10081402040), (4, 5040701020), (5, 4032560816), (8, 2520350510), (10, 2016280408), (16, 1260175255), (20, 1008140204), (40, 504070102), (80, 252035051), (809, 24923120), (1618, 12461560), (3236, 6230780), (4045, 4984624), (6472, 3115390), (8090, 2492312), (12944, 1557695), (16180, 1246156), (32360, 623078), (64720, 311539)]