20439419

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2917}}^1$

素因数の和:2955

約数の個数: 24

約数和(自身を含む): 27942768

約数和(自身を除く): 7503349

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 2917, 7007, 20419, 32087, 37921, 142933, 224609, 265447, 417131, 1572263, 1858129, 2919917, 20439419]

約数ペア:

[(1, 20439419), (7, 2919917), (11, 1858129), (13, 1572263), (49, 417131), (77, 265447), (91, 224609), (143, 142933), (539, 37921), (637, 32087), (1001, 20419), (2917, 7007)]