16921233

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{6551}}^1$

素因数の和:6605

約数の個数: 24

約数和(自身を含む): 28619136

約数和(自身を除く): 11697903

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 6551, 19653, 45857, 58959, 137571, 268591, 412713, 805773, 1880137, 2417319, 5640411, 16921233]

約数ペア:

[(1, 16921233), (3, 5640411), (7, 2417319), (9, 1880137), (21, 805773), (41, 412713), (63, 268591), (123, 137571), (287, 58959), (369, 45857), (861, 19653), (2583, 6551)]