211287923

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1039}}^1$

素因数の和:1215

約数の個数: 32

約数和(自身を含む): 279552000

約数和(自身を除く): 68264077

約数列:

[1, 7, 11, 19, 77, 133, 139, 209, 973, 1039, 1463, 1529, 2641, 7273, 10703, 11429, 18487, 19741, 29051, 80003, 138187, 144421, 203357, 217151, 1010947, 1520057, 1588631, 2743999, 11120417, 19207993, 30183989, 211287923]

約数ペア:

[(1, 211287923), (7, 30183989), (11, 19207993), (19, 11120417), (77, 2743999), (133, 1588631), (139, 1520057), (209, 1010947), (973, 217151), (1039, 203357), (1463, 144421), (1529, 138187), (2641, 80003), (7273, 29051), (10703, 19741), (11429, 18487)]