21581793

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:493

約数の個数: 24

約数和(自身を含む): 31999968

約数和(自身を除く): 10418175

約数列:

[1, 3, 9, 73, 107, 219, 307, 321, 657, 921, 963, 2763, 7811, 22411, 23433, 32849, 67233, 70299, 98547, 201699, 295641, 2397977, 7193931, 21581793]

約数ペア:

[(1, 21581793), (3, 7193931), (9, 2397977), (73, 295641), (107, 201699), (219, 98547), (307, 70299), (321, 67233), (657, 32849), (921, 23433), (963, 22411), (2763, 7811)]