21510896

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:342

約数の個数: 60

約数和(自身を含む): 47101152

約数和(自身を除く): 25590256

約数列:

[1, 2, 4, 8, 11, 16, 22, 41, 44, 82, 88, 121, 164, 176, 242, 271, 328, 451, 484, 542, 656, 902, 968, 1084, 1804, 1936, 2168, 2981, 3608, 4336, 4961, 5962, 7216, 9922, 11111, 11924, 19844, 22222, 23848, 32791, 39688, 44444, 47696, 65582, 79376, 88888, 122221, 131164, 177776, 244442, 262328, 488884, 524656, 977768, 1344431, 1955536, 2688862, 5377724, 10755448, 21510896]

約数ペア:

[(1, 21510896), (2, 10755448), (4, 5377724), (8, 2688862), (11, 1955536), (16, 1344431), (22, 977768), (41, 524656), (44, 488884), (82, 262328), (88, 244442), (121, 177776), (164, 131164), (176, 122221), (242, 88888), (271, 79376), (328, 65582), (451, 47696), (484, 44444), (542, 39688), (656, 32791), (902, 23848), (968, 22222), (1084, 19844), (1804, 11924), (1936, 11111), (2168, 9922), (2981, 7216), (3608, 5962), (4336, 4961)]