20047235

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9949}}^1$

素因数の和:9998

約数の個数: 16

約数和(自身を含む): 26745600

約数和(自身を除く): 6698365

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9949, 49745, 129337, 308419, 646685, 1542095, 4009447, 20047235]

約数ペア:

[(1, 20047235), (5, 4009447), (13, 1542095), (31, 646685), (65, 308419), (155, 129337), (403, 49745), (2015, 9949)]