20810805

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{81611}}^1$

素因数の和:81636

約数の個数: 16

約数和(自身を含む): 35256384

約数和(自身を除く): 14445579

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 81611, 244833, 408055, 1224165, 1387387, 4162161, 6936935, 20810805]

約数ペア:

[(1, 20810805), (3, 6936935), (5, 4162161), (15, 1387387), (17, 1224165), (51, 408055), (85, 244833), (255, 81611)]