20904895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{8087}}^1$

素因数の和:8150

約数の個数: 16

約数和(自身を含む): 27952128

約数和(自身を除く): 7047233

約数列:

[1, 5, 11, 47, 55, 235, 517, 2585, 8087, 40435, 88957, 380089, 444785, 1900445, 4180979, 20904895]

約数ペア:

[(1, 20904895), (5, 4180979), (11, 1900445), (47, 444785), (55, 380089), (235, 88957), (517, 40435), (2585, 8087)]