11720751

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1123}}^1$

素因数の和:1211

約数の個数: 24

約数和(自身を含む): 18451584

約数和(自身を除く): 6730833

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1123, 1491, 3369, 3479, 7861, 10437, 23583, 55027, 79733, 165081, 239199, 558131, 1674393, 3906917, 11720751]

約数ペア:

[(1, 11720751), (3, 3906917), (7, 1674393), (21, 558131), (49, 239199), (71, 165081), (147, 79733), (213, 55027), (497, 23583), (1123, 10437), (1491, 7861), (3369, 3479)]