20717825

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 27105408

約数和(自身を除く): 6387583

約数列:

[1, 5, 23, 25, 115, 137, 263, 575, 685, 1315, 3151, 3425, 6049, 6575, 15755, 30245, 36031, 78775, 151225, 180155, 828713, 900775, 4143565, 20717825]

約数ペア:

[(1, 20717825), (5, 4143565), (23, 900775), (25, 828713), (115, 180155), (137, 151225), (263, 78775), (575, 36031), (685, 30245), (1315, 15755), (3151, 6575), (3425, 6049)]