28749721

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:422

約数の個数: 36

約数和(自身を含む): 39694116

約数和(自身を除く): 10944395

約数列:

[1, 7, 11, 13, 49, 77, 91, 121, 143, 373, 539, 637, 847, 1001, 1573, 2611, 4103, 4849, 5929, 7007, 11011, 18277, 28721, 33943, 45133, 53339, 77077, 201047, 237601, 315931, 373373, 586729, 2211517, 2613611, 4107103, 28749721]

約数ペア:

[(1, 28749721), (7, 4107103), (11, 2613611), (13, 2211517), (49, 586729), (77, 373373), (91, 315931), (121, 237601), (143, 201047), (373, 77077), (539, 53339), (637, 45133), (847, 33943), (1001, 28721), (1573, 18277), (2611, 11011), (4103, 7007), (4849, 5929)]