21148492071

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{947}}^1\times {\mathrm{3533}}^1$

素因数の和:4540

約数の個数: 48

約数和(自身を含む): 33609527424

約数和(自身を除く): 12461035353

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 947, 2107, 2841, 3533, 6321, 6629, 10599, 19887, 24731, 40721, 46403, 74193, 122163, 139209, 151919, 173117, 285047, 455757, 519351, 855141, 1063433, 1995329, 3190299, 3345751, 5985987, 7444031, 10037253, 22332093, 23420257, 70260771, 143867293, 163941799, 431601879, 491825397, 1007071051, 3021213153, 7049497357, 21148492071]

約数ペア:

[(1, 21148492071), (3, 7049497357), (7, 3021213153), (21, 1007071051), (43, 491825397), (49, 431601879), (129, 163941799), (147, 143867293), (301, 70260771), (903, 23420257), (947, 22332093), (2107, 10037253), (2841, 7444031), (3533, 5985987), (6321, 3345751), (6629, 3190299), (10599, 1995329), (19887, 1063433), (24731, 855141), (40721, 519351), (46403, 455757), (74193, 285047), (122163, 173117), (139209, 151919)]