21090591

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{45949}}^1$

素因数の和:45975

約数の個数: 16

約数和(自身を含む): 33084000

約数和(自身を除く): 11993409

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 45949, 137847, 413541, 781133, 1240623, 2343399, 7030197, 21090591]

約数ペア:

[(1, 21090591), (3, 7030197), (9, 2343399), (17, 1240623), (27, 781133), (51, 413541), (153, 137847), (459, 45949)]