21989792

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{349}}^1$

素因数の和:549

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 25638208

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 179, 349, 352, 358, 698, 716, 1396, 1432, 1969, 2792, 2864, 3839, 3938, 5584, 5728, 7678, 7876, 11168, 15356, 15752, 30712, 31504, 61424, 62471, 63008, 122848, 124942, 249884, 499768, 687181, 999536, 1374362, 1999072, 2748724, 5497448, 10994896, 21989792]

約数ペア:

[(1, 21989792), (2, 10994896), (4, 5497448), (8, 2748724), (11, 1999072), (16, 1374362), (22, 999536), (32, 687181), (44, 499768), (88, 249884), (176, 124942), (179, 122848), (349, 63008), (352, 62471), (358, 61424), (698, 31504), (716, 30712), (1396, 15752), (1432, 15356), (1969, 11168), (2792, 7876), (2864, 7678), (3839, 5728), (3938, 5584)]