19974625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:298

約数の個数: 32

約数和(自身を含む): 27705600

約数和(自身を除く): 7730975

約数列:

[1, 5, 11, 25, 55, 73, 125, 199, 275, 365, 803, 995, 1375, 1825, 2189, 4015, 4975, 9125, 10945, 14527, 20075, 24875, 54725, 72635, 100375, 159797, 273625, 363175, 798985, 1815875, 3994925, 19974625]

約数ペア:

[(1, 19974625), (5, 3994925), (11, 1815875), (25, 798985), (55, 363175), (73, 273625), (125, 159797), (199, 100375), (275, 72635), (365, 54725), (803, 24875), (995, 20075), (1375, 14527), (1825, 10945), (2189, 9125), (4015, 4975)]