18508721

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1493}}^1$

素因数の和:1541

約数の個数: 24

約数和(自身を含む): 24525504

約数和(自身を除く): 6016783

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1493, 1771, 10451, 12397, 16423, 34339, 73157, 114961, 240373, 377729, 804727, 1682611, 2644103, 18508721]

約数ペア:

[(1, 18508721), (7, 2644103), (11, 1682611), (23, 804727), (49, 377729), (77, 240373), (161, 114961), (253, 73157), (539, 34339), (1127, 16423), (1493, 12397), (1771, 10451)]