19995008

素因数分解:

$2^7\times {\mathrm{11}}^2\times {\mathrm{1291}}^1$

素因数の和:1327

約数の個数: 48

約数和(自身を含む): 43818180

約数和(自身を除く): 23823172

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 128, 176, 242, 352, 484, 704, 968, 1291, 1408, 1936, 2582, 3872, 5164, 7744, 10328, 14201, 15488, 20656, 28402, 41312, 56804, 82624, 113608, 156211, 165248, 227216, 312422, 454432, 624844, 908864, 1249688, 1817728, 2499376, 4998752, 9997504, 19995008]

約数ペア:

[(1, 19995008), (2, 9997504), (4, 4998752), (8, 2499376), (11, 1817728), (16, 1249688), (22, 908864), (32, 624844), (44, 454432), (64, 312422), (88, 227216), (121, 165248), (128, 156211), (176, 113608), (242, 82624), (352, 56804), (484, 41312), (704, 28402), (968, 20656), (1291, 15488), (1408, 14201), (1936, 10328), (2582, 7744), (3872, 5164)]