20657800

素因数分解:

$2^3\times 5^2\times {\mathrm{103289}}^1$

素因数の和:103305

約数の個数: 24

約数和(自身を含む): 48029850

約数和(自身を除く): 27372050

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 103289, 206578, 413156, 516445, 826312, 1032890, 2065780, 2582225, 4131560, 5164450, 10328900, 20657800]

約数ペア:

[(1, 20657800), (2, 10328900), (4, 5164450), (5, 4131560), (8, 2582225), (10, 2065780), (20, 1032890), (25, 826312), (40, 516445), (50, 413156), (100, 206578), (200, 103289)]