19529860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{701}}^1$

素因数の和:916

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 27644540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 701, 796, 995, 1393, 1402, 1990, 2786, 2804, 3505, 3980, 4907, 5572, 6965, 7010, 9814, 13930, 14020, 19628, 24535, 27860, 49070, 98140, 139499, 278998, 557996, 697495, 976493, 1394990, 1952986, 2789980, 3905972, 4882465, 9764930, 19529860]

約数ペア:

[(1, 19529860), (2, 9764930), (4, 4882465), (5, 3905972), (7, 2789980), (10, 1952986), (14, 1394990), (20, 976493), (28, 697495), (35, 557996), (70, 278998), (140, 139499), (199, 98140), (398, 49070), (701, 27860), (796, 24535), (995, 19628), (1393, 14020), (1402, 13930), (1990, 9814), (2786, 7010), (2804, 6965), (3505, 5572), (3980, 4907)]