19019007

素因数分解:

$3^2\times 7^3\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 48

約数和(自身を含む): 32884800

約数和(自身を除く): 13865793

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 101, 147, 183, 303, 343, 427, 441, 549, 707, 909, 1029, 1281, 2121, 2989, 3087, 3843, 4949, 6161, 6363, 8967, 14847, 18483, 20923, 26901, 34643, 43127, 44541, 55449, 62769, 103929, 129381, 188307, 301889, 311787, 388143, 905667, 2113223, 2717001, 6339669, 19019007]

約数ペア:

[(1, 19019007), (3, 6339669), (7, 2717001), (9, 2113223), (21, 905667), (49, 388143), (61, 311787), (63, 301889), (101, 188307), (147, 129381), (183, 103929), (303, 62769), (343, 55449), (427, 44541), (441, 43127), (549, 34643), (707, 26901), (909, 20923), (1029, 18483), (1281, 14847), (2121, 8967), (2989, 6363), (3087, 6161), (3843, 4949)]