19752740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{709}}^1$

素因数の和:924

約数の個数: 48

約数和(自身を含む): 47712000

約数和(自身を除く): 27959260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 709, 796, 995, 1393, 1418, 1990, 2786, 2836, 3545, 3980, 4963, 5572, 6965, 7090, 9926, 13930, 14180, 19852, 24815, 27860, 49630, 99260, 141091, 282182, 564364, 705455, 987637, 1410910, 1975274, 2821820, 3950548, 4938185, 9876370, 19752740]

約数ペア:

[(1, 19752740), (2, 9876370), (4, 4938185), (5, 3950548), (7, 2821820), (10, 1975274), (14, 1410910), (20, 987637), (28, 705455), (35, 564364), (70, 282182), (140, 141091), (199, 99260), (398, 49630), (709, 27860), (796, 24815), (995, 19852), (1393, 14180), (1418, 13930), (1990, 9926), (2786, 7090), (2836, 6965), (3545, 5572), (3980, 4963)]