28900557

素因数分解:

$3^4\times 7^1\times {\mathrm{50971}}^1$

素因数の和:50990

約数の個数: 20

約数和(自身を含む): 49340896

約数和(自身を除く): 20440339

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 50971, 152913, 356797, 458739, 1070391, 1376217, 3211173, 4128651, 9633519, 28900557]

約数ペア:

[(1, 28900557), (3, 9633519), (7, 4128651), (9, 3211173), (21, 1376217), (27, 1070391), (63, 458739), (81, 356797), (189, 152913), (567, 50971)]