21986960

素因数分解:

$2^4\times 5^1\times {\mathrm{274837}}^1$

素因数の和:274850

約数の個数: 20

約数和(自身を含む): 51119868

約数和(自身を除く): 29132908

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274837, 549674, 1099348, 1374185, 2198696, 2748370, 4397392, 5496740, 10993480, 21986960]

約数ペア:

[(1, 21986960), (2, 10993480), (4, 5496740), (5, 4397392), (8, 2748370), (10, 2198696), (16, 1374185), (20, 1099348), (40, 549674), (80, 274837)]