28361480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{509}}^1$

素因数の和:726

約数の個数: 64

約数和(自身を含む): 73440000

約数和(自身を除く): 45078520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 509, 796, 995, 1018, 1393, 1592, 1990, 2036, 2545, 2786, 3563, 3980, 4072, 5090, 5572, 6965, 7126, 7960, 10180, 11144, 13930, 14252, 17815, 20360, 27860, 28504, 35630, 55720, 71260, 101291, 142520, 202582, 405164, 506455, 709037, 810328, 1012910, 1418074, 2025820, 2836148, 3545185, 4051640, 5672296, 7090370, 14180740, 28361480]

約数ペア:

[(1, 28361480), (2, 14180740), (4, 7090370), (5, 5672296), (7, 4051640), (8, 3545185), (10, 2836148), (14, 2025820), (20, 1418074), (28, 1012910), (35, 810328), (40, 709037), (56, 506455), (70, 405164), (140, 202582), (199, 142520), (280, 101291), (398, 71260), (509, 55720), (796, 35630), (995, 28504), (1018, 27860), (1393, 20360), (1592, 17815), (1990, 14252), (2036, 13930), (2545, 11144), (2786, 10180), (3563, 7960), (3980, 7126), (4072, 6965), (5090, 5572)]