21490703

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2069}}^1$

素因数の和:2146

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 3548017

約数列:

[1, 13, 17, 47, 221, 611, 799, 2069, 10387, 26897, 35173, 97243, 457249, 1264159, 1653131, 21490703]

約数ペア:

[(1, 21490703), (13, 1653131), (17, 1264159), (47, 457249), (221, 97243), (611, 35173), (799, 26897), (2069, 10387)]