18903157

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^2$

素因数の和:110

約数の個数: 36

約数和(自身を含む): 25502880

約数和(自身を除く): 6599723

約数列:

[1, 7, 13, 19, 29, 91, 133, 169, 203, 247, 377, 551, 841, 1183, 1729, 2639, 3211, 3857, 4901, 5887, 7163, 10933, 15979, 22477, 34307, 50141, 76531, 93119, 111853, 142129, 207727, 651833, 994903, 1454089, 2700451, 18903157]

約数ペア:

[(1, 18903157), (7, 2700451), (13, 1454089), (19, 994903), (29, 651833), (91, 207727), (133, 142129), (169, 111853), (203, 93119), (247, 76531), (377, 50141), (551, 34307), (841, 22477), (1183, 15979), (1729, 10933), (2639, 7163), (3211, 5887), (3857, 4901)]