72157400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 201438000

約数和(自身を除く): 129280600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 37, 40, 49, 50, 56, 70, 74, 98, 100, 140, 148, 175, 185, 196, 199, 200, 245, 259, 280, 296, 350, 370, 392, 398, 490, 518, 700, 740, 796, 925, 980, 995, 1036, 1225, 1295, 1393, 1400, 1480, 1592, 1813, 1850, 1960, 1990, 2072, 2450, 2590, 2786, 3626, 3700, 3980, 4900, 4975, 5180, 5572, 6475, 6965, 7252, 7363, 7400, 7960, 9065, 9751, 9800, 9950, 10360, 11144, 12950, 13930, 14504, 14726, 18130, 19502, 19900, 25900, 27860, 29452, 34825, 36260, 36815, 39004, 39800, 45325, 48755, 51541, 51800, 55720, 58904, 69650, 72520, 73630, 78008, 90650, 97510, 103082, 139300, 147260, 181300, 184075, 195020, 206164, 243775, 257705, 278600, 294520, 360787, 362600, 368150, 390040, 412328, 487550, 515410, 721574, 736300, 975100, 1030820, 1288525, 1443148, 1472600, 1803935, 1950200, 2061640, 2577050, 2886296, 3607870, 5154100, 7215740, 9019675, 10308200, 14431480, 18039350, 36078700, 72157400]

約数ペア:

[(1, 72157400), (2, 36078700), (4, 18039350), (5, 14431480), (7, 10308200), (8, 9019675), (10, 7215740), (14, 5154100), (20, 3607870), (25, 2886296), (28, 2577050), (35, 2061640), (37, 1950200), (40, 1803935), (49, 1472600), (50, 1443148), (56, 1288525), (70, 1030820), (74, 975100), (98, 736300), (100, 721574), (140, 515410), (148, 487550), (175, 412328), (185, 390040), (196, 368150), (199, 362600), (200, 360787), (245, 294520), (259, 278600), (280, 257705), (296, 243775), (350, 206164), (370, 195020), (392, 184075), (398, 181300), (490, 147260), (518, 139300), (700, 103082), (740, 97510), (796, 90650), (925, 78008), (980, 73630), (995, 72520), (1036, 69650), (1225, 58904), (1295, 55720), (1393, 51800), (1400, 51541), (1480, 48755), (1592, 45325), (1813, 39800), (1850, 39004), (1960, 36815), (1990, 36260), (2072, 34825), (2450, 29452), (2590, 27860), (2786, 25900), (3626, 19900), (3700, 19502), (3980, 18130), (4900, 14726), (4975, 14504), (5180, 13930), (5572, 12950), (6475, 11144), (6965, 10360), (7252, 9950), (7363, 9800), (7400, 9751), (7960, 9065)]