20173944987

素因数分解:

$3^2\times 7^2\times {\mathrm{45745907}}^1$

素因数の和:45745927

約数の個数: 18

約数和(自身を含む): 33897717828

約数和(自身を除く): 13723772841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45745907, 137237721, 320221349, 411713163, 960664047, 2241549443, 2881992141, 6724648329, 20173944987]

約数ペア:

[(1, 20173944987), (3, 6724648329), (7, 2881992141), (9, 2241549443), (21, 960664047), (49, 411713163), (63, 320221349), (147, 137237721), (441, 45745907)]