21518277

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{317}}^1$

素因数の和:370

約数の個数: 32

約数和(自身を含む): 33519744

約数和(自身を除く): 12001467

約数列:

[1, 3, 11, 17, 33, 51, 121, 187, 317, 363, 561, 951, 1331, 2057, 3487, 3993, 5389, 6171, 10461, 16167, 22627, 38357, 59279, 67881, 115071, 177837, 421927, 652069, 1265781, 1956207, 7172759, 21518277]

約数ペア:

[(1, 21518277), (3, 7172759), (11, 1956207), (17, 1265781), (33, 652069), (51, 421927), (121, 177837), (187, 115071), (317, 67881), (363, 59279), (561, 38357), (951, 22627), (1331, 16167), (2057, 10461), (3487, 6171), (3993, 5389)]