28400425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{911}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 37319040

約数和(自身を除く): 8918615

約数列:

[1, 5, 25, 29, 43, 145, 215, 725, 911, 1075, 1247, 4555, 6235, 22775, 26419, 31175, 39173, 132095, 195865, 660475, 979325, 1136017, 5680085, 28400425]

約数ペア:

[(1, 28400425), (5, 5680085), (25, 1136017), (29, 979325), (43, 660475), (145, 195865), (215, 132095), (725, 39173), (911, 31175), (1075, 26419), (1247, 22775), (4555, 6235)]