20491851

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1\times {\mathrm{907}}^1$

素因数の和:1370

約数の個数: 16

約数和(自身を含む): 29026944

約数和(自身を除く): 8535093

約数列:

[1, 3, 17, 51, 443, 907, 1329, 2721, 7531, 15419, 22593, 46257, 401801, 1205403, 6830617, 20491851]

約数ペア:

[(1, 20491851), (3, 6830617), (17, 1205403), (51, 401801), (443, 46257), (907, 22593), (1329, 15419), (2721, 7531)]