21490172

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{503}}^1\times {\mathrm{971}}^1$

素因数の和:1489

約数の個数: 24

約数和(自身を含む): 41150592

約数和(自身を除く): 19660420

約数列:

[1, 2, 4, 11, 22, 44, 503, 971, 1006, 1942, 2012, 3884, 5533, 10681, 11066, 21362, 22132, 42724, 488413, 976826, 1953652, 5372543, 10745086, 21490172]

約数ペア:

[(1, 21490172), (2, 10745086), (4, 5372543), (11, 1953652), (22, 976826), (44, 488413), (503, 42724), (971, 22132), (1006, 21362), (1942, 11066), (2012, 10681), (3884, 5533)]