20986905

素因数分解:

$3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{5051}}^1$

素因数の和:5336

約数の個数: 16

約数和(自身を含む): 33706944

約数和(自身を除く): 12720039

約数列:

[1, 3, 5, 15, 277, 831, 1385, 4155, 5051, 15153, 25255, 75765, 1399127, 4197381, 6995635, 20986905]

約数ペア:

[(1, 20986905), (3, 6995635), (5, 4197381), (15, 1399127), (277, 75765), (831, 25255), (1385, 15153), (4155, 5051)]