81041560

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20887}}^1$

素因数の和:20995

約数の個数: 32

約数和(自身を含む): 184232160

約数和(自身を除く): 103190600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 20887, 41774, 83548, 104435, 167096, 208870, 417740, 835480, 2026039, 4052078, 8104156, 10130195, 16208312, 20260390, 40520780, 81041560]

約数ペア:

[(1, 81041560), (2, 40520780), (4, 20260390), (5, 16208312), (8, 10130195), (10, 8104156), (20, 4052078), (40, 2026039), (97, 835480), (194, 417740), (388, 208870), (485, 167096), (776, 104435), (970, 83548), (1940, 41774), (3880, 20887)]