20856297

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 37822464

約数和(自身を除く): 16966167

約数列:

[1, 3, 7, 11, 17, 21, 33, 47, 51, 77, 113, 119, 141, 187, 231, 329, 339, 357, 517, 561, 791, 799, 987, 1243, 1309, 1551, 1921, 2373, 2397, 3619, 3729, 3927, 5311, 5593, 5763, 8701, 8789, 10857, 13447, 15933, 16779, 21131, 26103, 26367, 37177, 40341, 58421, 61523, 63393, 90287, 111531, 147917, 175263, 184569, 270861, 408947, 443751, 632009, 993157, 1226841, 1896027, 2979471, 6952099, 20856297]

約数ペア:

[(1, 20856297), (3, 6952099), (7, 2979471), (11, 1896027), (17, 1226841), (21, 993157), (33, 632009), (47, 443751), (51, 408947), (77, 270861), (113, 184569), (119, 175263), (141, 147917), (187, 111531), (231, 90287), (329, 63393), (339, 61523), (357, 58421), (517, 40341), (561, 37177), (791, 26367), (799, 26103), (987, 21131), (1243, 16779), (1309, 15933), (1551, 13447), (1921, 10857), (2373, 8789), (2397, 8701), (3619, 5763), (3729, 5593), (3927, 5311)]