21840250

素因数分解:

$2^1\times 5^3\times {\mathrm{199}}^1\times {\mathrm{439}}^1$

素因数の和:655

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 19343750

約数列:

[1, 2, 5, 10, 25, 50, 125, 199, 250, 398, 439, 878, 995, 1990, 2195, 4390, 4975, 9950, 10975, 21950, 24875, 49750, 54875, 87361, 109750, 174722, 436805, 873610, 2184025, 4368050, 10920125, 21840250]

約数ペア:

[(1, 21840250), (2, 10920125), (5, 4368050), (10, 2184025), (25, 873610), (50, 436805), (125, 174722), (199, 109750), (250, 87361), (398, 54875), (439, 49750), (878, 24875), (995, 21950), (1990, 10975), (2195, 9950), (4390, 4975)]