20003920

素因数分解:

$2^4\times 5^1\times {\mathrm{250049}}^1$

素因数の和:250062

約数の個数: 20

約数和(自身を含む): 46509300

約数和(自身を除く): 26505380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250049, 500098, 1000196, 1250245, 2000392, 2500490, 4000784, 5000980, 10001960, 20003920]

約数ペア:

[(1, 20003920), (2, 10001960), (4, 5000980), (5, 4000784), (8, 2500490), (10, 2000392), (16, 1250245), (20, 1000196), (40, 500098), (80, 250049)]