20973117

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 31847040

約数和(自身を除く): 10873923

約数列:

[1, 3, 11, 33, 37, 89, 111, 193, 267, 407, 579, 979, 1221, 2123, 2937, 3293, 6369, 7141, 9879, 17177, 21423, 36223, 51531, 78551, 108669, 188947, 235653, 566841, 635549, 1906647, 6991039, 20973117]

約数ペア:

[(1, 20973117), (3, 6991039), (11, 1906647), (33, 635549), (37, 566841), (89, 235653), (111, 188947), (193, 108669), (267, 78551), (407, 51531), (579, 36223), (979, 21423), (1221, 17177), (2123, 9879), (2937, 7141), (3293, 6369)]