20820772

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17293}}^1$

素因数の和:17347

約数の個数: 24

約数和(自身を含む): 42612416

約数和(自身を除く): 21791644

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17293, 34586, 69172, 121051, 242102, 484204, 743599, 1487198, 2974396, 5205193, 10410386, 20820772]

約数ペア:

[(1, 20820772), (2, 10410386), (4, 5205193), (7, 2974396), (14, 1487198), (28, 743599), (43, 484204), (86, 242102), (172, 121051), (301, 69172), (602, 34586), (1204, 17293)]