20831750

素因数分解:

$2^1\times 5^3\times {\mathrm{103}}^1\times {\mathrm{809}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 39424320

約数和(自身を除く): 18592570

約数列:

[1, 2, 5, 10, 25, 50, 103, 125, 206, 250, 515, 809, 1030, 1618, 2575, 4045, 5150, 8090, 12875, 20225, 25750, 40450, 83327, 101125, 166654, 202250, 416635, 833270, 2083175, 4166350, 10415875, 20831750]

約数ペア:

[(1, 20831750), (2, 10415875), (5, 4166350), (10, 2083175), (25, 833270), (50, 416635), (103, 202250), (125, 166654), (206, 101125), (250, 83327), (515, 40450), (809, 25750), (1030, 20225), (1618, 12875), (2575, 8090), (4045, 5150)]