12810625

素因数分解:

$5^4\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 20

約数和(自身を含む): 16244800

約数和(自身を除く): 3434175

約数列:

[1, 5, 25, 103, 125, 199, 515, 625, 995, 2575, 4975, 12875, 20497, 24875, 64375, 102485, 124375, 512425, 2562125, 12810625]

約数ペア:

[(1, 12810625), (5, 2562125), (25, 512425), (103, 124375), (125, 102485), (199, 64375), (515, 24875), (625, 20497), (995, 12875), (2575, 4975)]