40520780

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20887}}^1$

素因数の和:20993

約数の個数: 24

約数和(自身を含む): 85975008

約数和(自身を除く): 45454228

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 20887, 41774, 83548, 104435, 208870, 417740, 2026039, 4052078, 8104156, 10130195, 20260390, 40520780]

約数ペア:

[(1, 40520780), (2, 20260390), (4, 10130195), (5, 8104156), (10, 4052078), (20, 2026039), (97, 417740), (194, 208870), (388, 104435), (485, 83548), (970, 41774), (1940, 20887)]