21003279

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1291}}^1$

素因数の和:1351

約数の個数: 32

約数和(自身を含む): 33488640

約数和(自身を除く): 12485361

約数列:

[1, 3, 11, 17, 29, 33, 51, 87, 187, 319, 493, 561, 957, 1291, 1479, 3873, 5423, 14201, 16269, 21947, 37439, 42603, 65841, 112317, 241417, 411829, 636463, 724251, 1235487, 1909389, 7001093, 21003279]

約数ペア:

[(1, 21003279), (3, 7001093), (11, 1909389), (17, 1235487), (29, 724251), (33, 636463), (51, 411829), (87, 241417), (187, 112317), (319, 65841), (493, 42603), (561, 37439), (957, 21947), (1291, 16269), (1479, 14201), (3873, 5423)]