28005341

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 37433088

約数和(自身を除く): 9427747

約数列:

[1, 7, 13, 17, 43, 91, 119, 221, 301, 421, 559, 731, 1547, 2947, 3913, 5117, 5473, 7157, 9503, 18103, 38311, 50099, 66521, 93041, 126721, 235339, 307751, 651287, 1647373, 2154257, 4000763, 28005341]

約数ペア:

[(1, 28005341), (7, 4000763), (13, 2154257), (17, 1647373), (43, 651287), (91, 307751), (119, 235339), (221, 126721), (301, 93041), (421, 66521), (559, 50099), (731, 38311), (1547, 18103), (2947, 9503), (3913, 7157), (5117, 5473)]