20565184520

素因数分解:

$2^3\times 5^1\times {\mathrm{514129613}}^1$

素因数の和:514129624

約数の個数: 16

約数和(自身を含む): 46271665260

約数和(自身を除く): 25706480740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 514129613, 1028259226, 2056518452, 2570648065, 4113036904, 5141296130, 10282592260, 20565184520]

約数ペア:

[(1, 20565184520), (2, 10282592260), (4, 5141296130), (5, 4113036904), (8, 2570648065), (10, 2056518452), (20, 1028259226), (40, 514129613)]