12561875

素因数分解:

$5^4\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 20

約数和(自身を含む): 15932400

約数和(自身を除く): 3370525

約数列:

[1, 5, 25, 101, 125, 199, 505, 625, 995, 2525, 4975, 12625, 20099, 24875, 63125, 100495, 124375, 502475, 2512375, 12561875]

約数ペア:

[(1, 12561875), (5, 2512375), (25, 502475), (101, 124375), (125, 100495), (199, 63125), (505, 24875), (625, 20099), (995, 12625), (2525, 4975)]