17770221

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2221}}^1$

素因数の和:2361

約数の個数: 24

約数和(自身を含む): 29579264

約数和(自身を除く): 11809043

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2221, 2667, 6663, 8001, 15547, 19989, 46641, 139923, 282067, 846201, 1974469, 2538603, 5923407, 17770221]

約数ペア:

[(1, 17770221), (3, 5923407), (7, 2538603), (9, 1974469), (21, 846201), (63, 282067), (127, 139923), (381, 46641), (889, 19989), (1143, 15547), (2221, 8001), (2667, 6663)]