21717916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 21464804

約数列:

[1, 2, 4, 11, 22, 44, 53, 67, 106, 134, 139, 212, 268, 278, 556, 583, 737, 1166, 1474, 1529, 2332, 2948, 3058, 3551, 6116, 7102, 7367, 9313, 14204, 14734, 18626, 29468, 37252, 39061, 78122, 81037, 102443, 156244, 162074, 204886, 324148, 409772, 493589, 987178, 1974356, 5429479, 10858958, 21717916]

約数ペア:

[(1, 21717916), (2, 10858958), (4, 5429479), (11, 1974356), (22, 987178), (44, 493589), (53, 409772), (67, 324148), (106, 204886), (134, 162074), (139, 156244), (212, 102443), (268, 81037), (278, 78122), (556, 39061), (583, 37252), (737, 29468), (1166, 18626), (1474, 14734), (1529, 14204), (2332, 9313), (2948, 7367), (3058, 7102), (3551, 6116)]