203207920

素因数分解:

$2^4\times 5^1\times {\mathrm{2540099}}^1$

素因数の和:2540112

約数の個数: 20

約数和(自身を含む): 472458600

約数和(自身を除く): 269250680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2540099, 5080198, 10160396, 12700495, 20320792, 25400990, 40641584, 50801980, 101603960, 203207920]

約数ペア:

[(1, 203207920), (2, 101603960), (4, 50801980), (5, 40641584), (8, 25400990), (10, 20320792), (16, 12700495), (20, 10160396), (40, 5080198), (80, 2540099)]