1309420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 3225600

約数和(自身を除く): 1916180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 199, 235, 329, 398, 470, 658, 796, 940, 995, 1316, 1393, 1645, 1990, 2786, 3290, 3980, 5572, 6580, 6965, 9353, 13930, 18706, 27860, 37412, 46765, 65471, 93530, 130942, 187060, 261884, 327355, 654710, 1309420]

約数ペア:

[(1, 1309420), (2, 654710), (4, 327355), (5, 261884), (7, 187060), (10, 130942), (14, 93530), (20, 65471), (28, 46765), (35, 37412), (47, 27860), (70, 18706), (94, 13930), (140, 9353), (188, 6965), (199, 6580), (235, 5572), (329, 3980), (398, 3290), (470, 2786), (658, 1990), (796, 1645), (940, 1393), (995, 1316)]