21481317

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{16691}}^1$

素因数の和:16721

約数の個数: 24

約数和(自身を含む): 36455328

約数和(自身を除く): 14974011

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287, 16691, 50073, 150219, 183601, 216983, 550803, 650949, 1652409, 1952847, 2386813, 7160439, 21481317]

約数ペア:

[(1, 21481317), (3, 7160439), (9, 2386813), (11, 1952847), (13, 1652409), (33, 650949), (39, 550803), (99, 216983), (117, 183601), (143, 150219), (429, 50073), (1287, 16691)]