20950040

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3823}}^1$

素因数の和:3971

約数の個数: 32

約数和(自身を含む): 47494080

約数和(自身を除く): 26544040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3823, 5480, 7646, 15292, 19115, 30584, 38230, 76460, 152920, 523751, 1047502, 2095004, 2618755, 4190008, 5237510, 10475020, 20950040]

約数ペア:

[(1, 20950040), (2, 10475020), (4, 5237510), (5, 4190008), (8, 2618755), (10, 2095004), (20, 1047502), (40, 523751), (137, 152920), (274, 76460), (548, 38230), (685, 30584), (1096, 19115), (1370, 15292), (2740, 7646), (3823, 5480)]