28928725

素因数分解:

$5^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3119}}^1$

素因数の和:3189

約数の個数: 24

約数和(自身を含む): 41783040

約数和(自身を除く): 12854315

約数列:

[1, 5, 7, 25, 35, 53, 175, 265, 371, 1325, 1855, 3119, 9275, 15595, 21833, 77975, 109165, 165307, 545825, 826535, 1157149, 4132675, 5785745, 28928725]

約数ペア:

[(1, 28928725), (5, 5785745), (7, 4132675), (25, 1157149), (35, 826535), (53, 545825), (175, 165307), (265, 109165), (371, 77975), (1325, 21833), (1855, 15595), (3119, 9275)]