19896080

素因数分解:

$2^4\times 5^1\times {\mathrm{248701}}^1$

素因数の和:248714

約数の個数: 20

約数和(自身を含む): 46258572

約数和(自身を除く): 26362492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248701, 497402, 994804, 1243505, 1989608, 2487010, 3979216, 4974020, 9948040, 19896080]

約数ペア:

[(1, 19896080), (2, 9948040), (4, 4974020), (5, 3979216), (8, 2487010), (10, 1989608), (16, 1243505), (20, 994804), (40, 497402), (80, 248701)]