28897225

素因数分解:

$5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2707}}^1$

素因数の和:2785

約数の個数: 24

約数和(自身を含む): 41638208

約数和(自身を除く): 12740983

約数列:

[1, 5, 7, 25, 35, 61, 175, 305, 427, 1525, 2135, 2707, 10675, 13535, 18949, 67675, 94745, 165127, 473725, 825635, 1155889, 4128175, 5779445, 28897225]

約数ペア:

[(1, 28897225), (5, 5779445), (7, 4128175), (25, 1155889), (35, 825635), (61, 473725), (175, 165127), (305, 94745), (427, 67675), (1525, 18949), (2135, 13535), (2707, 10675)]