21246753

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{313}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 33098112

約数和(自身を除く): 11851359

約数列:

[1, 3, 11, 17, 33, 51, 121, 187, 313, 363, 561, 939, 1331, 2057, 3443, 3993, 5321, 6171, 10329, 15963, 22627, 37873, 58531, 67881, 113619, 175593, 416603, 643841, 1249809, 1931523, 7082251, 21246753]

約数ペア:

[(1, 21246753), (3, 7082251), (11, 1931523), (17, 1249809), (33, 643841), (51, 416603), (121, 175593), (187, 113619), (313, 67881), (363, 58531), (561, 37873), (939, 22627), (1331, 15963), (2057, 10329), (3443, 6171), (3993, 5321)]