31368020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{14389}}^1$

素因数の和:14507

約数の個数: 24

約数和(自身を含む): 66481800

約数和(自身を除く): 35113780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 14389, 28778, 57556, 71945, 143890, 287780, 1568401, 3136802, 6273604, 7842005, 15684010, 31368020]

約数ペア:

[(1, 31368020), (2, 15684010), (4, 7842005), (5, 6273604), (10, 3136802), (20, 1568401), (109, 287780), (218, 143890), (436, 71945), (545, 57556), (1090, 28778), (2180, 14389)]