81133340

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{21019}}^1$

素因数の和:21221

約数の個数: 24

約数和(自身を含む): 171270960

約数和(自身を除く): 90137620

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 21019, 42038, 84076, 105095, 210190, 420380, 4056667, 8113334, 16226668, 20283335, 40566670, 81133340]

約数ペア:

[(1, 81133340), (2, 40566670), (4, 20283335), (5, 16226668), (10, 8113334), (20, 4056667), (193, 420380), (386, 210190), (772, 105095), (965, 84076), (1930, 42038), (3860, 21019)]