20656856

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 23821864

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 53, 86, 88, 103, 106, 172, 206, 212, 344, 412, 424, 473, 583, 824, 946, 1133, 1166, 1892, 2266, 2279, 2332, 3784, 4429, 4532, 4558, 4664, 5459, 8858, 9064, 9116, 10918, 17716, 18232, 21836, 25069, 35432, 43672, 48719, 50138, 60049, 97438, 100276, 120098, 194876, 200552, 234737, 240196, 389752, 469474, 480392, 938948, 1877896, 2582107, 5164214, 10328428, 20656856]

約数ペア:

[(1, 20656856), (2, 10328428), (4, 5164214), (8, 2582107), (11, 1877896), (22, 938948), (43, 480392), (44, 469474), (53, 389752), (86, 240196), (88, 234737), (103, 200552), (106, 194876), (172, 120098), (206, 100276), (212, 97438), (344, 60049), (412, 50138), (424, 48719), (473, 43672), (583, 35432), (824, 25069), (946, 21836), (1133, 18232), (1166, 17716), (1892, 10918), (2266, 9116), (2279, 9064), (2332, 8858), (3784, 5459), (4429, 4664), (4532, 4558)]