28209699

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23567}}^1$

素因数の和:23599

約数の個数: 24

約数和(自身を含む): 49021440

約数和(自身を除く): 20811741

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 23567, 70701, 164969, 212103, 447773, 494907, 1343319, 1484721, 3134411, 4029957, 9403233, 28209699]

約数ペア:

[(1, 28209699), (3, 9403233), (7, 4029957), (9, 3134411), (19, 1484721), (21, 1343319), (57, 494907), (63, 447773), (133, 212103), (171, 164969), (399, 70701), (1197, 23567)]