28770021

素因数分解:

$3^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{1459}}^1$

素因数の和:1785

約数の個数: 24

約数和(自身を含む): 47677760

約数和(自身を除く): 18907739

約数列:

[1, 3, 7, 9, 21, 63, 313, 939, 1459, 2191, 2817, 4377, 6573, 10213, 13131, 19719, 30639, 91917, 456667, 1370001, 3196669, 4110003, 9590007, 28770021]

約数ペア:

[(1, 28770021), (3, 9590007), (7, 4110003), (9, 3196669), (21, 1370001), (63, 456667), (313, 91917), (939, 30639), (1459, 19719), (2191, 13131), (2817, 10213), (4377, 6573)]