20736080

素因数分解:

$2^4\times 5^1\times {\mathrm{259201}}^1$

素因数の和:259214

約数の個数: 20

約数和(自身を含む): 48211572

約数和(自身を除く): 27475492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 259201, 518402, 1036804, 1296005, 2073608, 2592010, 4147216, 5184020, 10368040, 20736080]

約数ペア:

[(1, 20736080), (2, 10368040), (4, 5184020), (5, 4147216), (8, 2592010), (10, 2073608), (16, 1296005), (20, 1036804), (40, 518402), (80, 259201)]