21285989

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 23715648

約数和(自身を除く): 2429659

約数列:

[1, 17, 37, 43, 629, 731, 787, 1591, 13379, 27047, 29119, 33841, 495023, 575297, 1252117, 21285989]

約数ペア:

[(1, 21285989), (17, 1252117), (37, 575297), (43, 495023), (629, 33841), (731, 29119), (787, 27047), (1591, 13379)]