21079201

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:106

約数の個数: 48

約数和(自身を含む): 28460160

約数和(自身を除く): 7380959

約数列:

[1, 11, 13, 17, 23, 29, 143, 169, 187, 221, 253, 299, 319, 377, 391, 493, 667, 1859, 2431, 2873, 3289, 3887, 4147, 4301, 4901, 5083, 5423, 6409, 7337, 8671, 11339, 31603, 42757, 53911, 55913, 66079, 70499, 83317, 95381, 112723, 124729, 147407, 726869, 916487, 1239953, 1621477, 1916291, 21079201]

約数ペア:

[(1, 21079201), (11, 1916291), (13, 1621477), (17, 1239953), (23, 916487), (29, 726869), (143, 147407), (169, 124729), (187, 112723), (221, 95381), (253, 83317), (299, 70499), (319, 66079), (377, 55913), (391, 53911), (493, 42757), (667, 31603), (1859, 11339), (2431, 8671), (2873, 7337), (3289, 6409), (3887, 5423), (4147, 5083), (4301, 4901)]