21704517

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{1567}}^1$

素因数の和:1604

約数の個数: 28

約数和(自身を含む): 34276480

約数和(自身を除く): 12571963

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 729, 1539, 1567, 4617, 4701, 13851, 14103, 29773, 42309, 89319, 126927, 267957, 380781, 803871, 1142343, 2411613, 7234839, 21704517]

約数ペア:

[(1, 21704517), (3, 7234839), (9, 2411613), (19, 1142343), (27, 803871), (57, 380781), (81, 267957), (171, 126927), (243, 89319), (513, 42309), (729, 29773), (1539, 14103), (1567, 13851), (4617, 4701)]