20477288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 44721600

約数和(自身を除く): 24244312

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 43, 52, 76, 86, 104, 152, 172, 241, 247, 344, 482, 494, 559, 817, 964, 988, 1118, 1634, 1928, 1976, 2236, 3133, 3268, 4472, 4579, 6266, 6536, 9158, 10363, 10621, 12532, 18316, 20726, 21242, 25064, 36632, 41452, 42484, 59527, 82904, 84968, 119054, 134719, 196897, 238108, 269438, 393794, 476216, 538876, 787588, 1077752, 1575176, 2559661, 5119322, 10238644, 20477288]

約数ペア:

[(1, 20477288), (2, 10238644), (4, 5119322), (8, 2559661), (13, 1575176), (19, 1077752), (26, 787588), (38, 538876), (43, 476216), (52, 393794), (76, 269438), (86, 238108), (104, 196897), (152, 134719), (172, 119054), (241, 84968), (247, 82904), (344, 59527), (482, 42484), (494, 41452), (559, 36632), (817, 25064), (964, 21242), (988, 20726), (1118, 18316), (1634, 12532), (1928, 10621), (1976, 10363), (2236, 9158), (3133, 6536), (3268, 6266), (4472, 4579)]