20728835

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4672765

約数列:

[1, 5, 83, 199, 251, 415, 995, 1255, 16517, 20833, 49949, 82585, 104165, 249745, 4145767, 20728835]

約数ペア:

[(1, 20728835), (5, 4145767), (83, 249745), (199, 104165), (251, 82585), (415, 49949), (995, 20833), (1255, 16517)]