21049077

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8423}}^1$

素因数の和:8457

約数の個数: 24

約数和(自身を含む): 34572096

約数和(自身を除く): 13523019

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8423, 25269, 58961, 143191, 176883, 412727, 429573, 1002337, 1238181, 3007011, 7016359, 21049077]

約数ペア:

[(1, 21049077), (3, 7016359), (7, 3007011), (17, 1238181), (21, 1002337), (49, 429573), (51, 412727), (119, 176883), (147, 143191), (357, 58961), (833, 25269), (2499, 8423)]