20604493

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7700147

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 701, 1547, 1729, 2261, 4199, 4907, 9113, 11917, 13319, 29393, 63791, 83419, 93233, 154921, 173147, 226423, 1084447, 1212029, 1584961, 2943499, 20604493]

約数ペア:

[(1, 20604493), (7, 2943499), (13, 1584961), (17, 1212029), (19, 1084447), (91, 226423), (119, 173147), (133, 154921), (221, 93233), (247, 83419), (323, 63791), (701, 29393), (1547, 13319), (1729, 11917), (2261, 9113), (4199, 4907)]