20387444

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1789}}^1$

素因数の和:1848

約数の個数: 48

約数和(自身を含む): 45709440

約数和(自身を除く): 25321996

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 74, 77, 148, 154, 259, 308, 407, 518, 814, 1036, 1628, 1789, 2849, 3578, 5698, 7156, 11396, 12523, 19679, 25046, 39358, 50092, 66193, 78716, 132386, 137753, 264772, 275506, 463351, 551012, 728123, 926702, 1456246, 1853404, 2912492, 5096861, 10193722, 20387444]

約数ペア:

[(1, 20387444), (2, 10193722), (4, 5096861), (7, 2912492), (11, 1853404), (14, 1456246), (22, 926702), (28, 728123), (37, 551012), (44, 463351), (74, 275506), (77, 264772), (148, 137753), (154, 132386), (259, 78716), (308, 66193), (407, 50092), (518, 39358), (814, 25046), (1036, 19679), (1628, 12523), (1789, 11396), (2849, 7156), (3578, 5698)]