7215740

素因数分解:

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

素因数の和:259

約数の個数: 72

約数和(自身を含む): 18194400

約数和(自身を除く): 10978660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 199, 245, 259, 370, 398, 490, 518, 740, 796, 980, 995, 1036, 1295, 1393, 1813, 1990, 2590, 2786, 3626, 3980, 5180, 5572, 6965, 7252, 7363, 9065, 9751, 13930, 14726, 18130, 19502, 27860, 29452, 36260, 36815, 39004, 48755, 51541, 73630, 97510, 103082, 147260, 195020, 206164, 257705, 360787, 515410, 721574, 1030820, 1443148, 1803935, 3607870, 7215740]

約数ペア:

[(1, 7215740), (2, 3607870), (4, 1803935), (5, 1443148), (7, 1030820), (10, 721574), (14, 515410), (20, 360787), (28, 257705), (35, 206164), (37, 195020), (49, 147260), (70, 103082), (74, 97510), (98, 73630), (140, 51541), (148, 48755), (185, 39004), (196, 36815), (199, 36260), (245, 29452), (259, 27860), (370, 19502), (398, 18130), (490, 14726), (518, 13930), (740, 9751), (796, 9065), (980, 7363), (995, 7252), (1036, 6965), (1295, 5572), (1393, 5180), (1813, 3980), (1990, 3626), (2590, 2786)]