81620858

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{409}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 137445120

約数和(自身を除く): 55824262

約数列:

[1, 2, 11, 22, 47, 94, 193, 386, 409, 517, 818, 1034, 2123, 4246, 4499, 8998, 9071, 18142, 19223, 38446, 78937, 99781, 157874, 199562, 211453, 422906, 868307, 1736614, 3710039, 7420078, 40810429, 81620858]

約数ペア:

[(1, 81620858), (2, 40810429), (11, 7420078), (22, 3710039), (47, 1736614), (94, 868307), (193, 422906), (386, 211453), (409, 199562), (517, 157874), (818, 99781), (1034, 78937), (2123, 38446), (4246, 19223), (4499, 18142), (8998, 9071)]