20256825

素因数分解:

$3^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{1657}}^1$

素因数の和:1833

約数の個数: 24

約数和(自身を含む): 33717088

約数和(自身を除く): 13460263

約数列:

[1, 3, 5, 15, 25, 75, 163, 489, 815, 1657, 2445, 4075, 4971, 8285, 12225, 24855, 41425, 124275, 270091, 810273, 1350455, 4051365, 6752275, 20256825]

約数ペア:

[(1, 20256825), (3, 6752275), (5, 4051365), (15, 1350455), (25, 810273), (75, 270091), (163, 124275), (489, 41425), (815, 24855), (1657, 12225), (2445, 8285), (4075, 4971)]