28400155

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6101}}^1$

素因数の和:6139

約数の個数: 24

約数和(自身を含む): 41737680

約数和(自身を除く): 13337525

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4655, 6101, 30505, 42707, 115919, 213535, 298949, 579595, 811433, 1494745, 4057165, 5680031, 28400155]

約数ペア:

[(1, 28400155), (5, 5680031), (7, 4057165), (19, 1494745), (35, 811433), (49, 579595), (95, 298949), (133, 213535), (245, 115919), (665, 42707), (931, 30505), (4655, 6101)]