2061640

素因数分解:

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

素因数の和:254

約数の個数: 64

約数和(自身を含む): 5472000

約数和(自身を除く): 3410360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 199, 259, 280, 296, 370, 398, 518, 740, 796, 995, 1036, 1295, 1393, 1480, 1592, 1990, 2072, 2590, 2786, 3980, 5180, 5572, 6965, 7363, 7960, 10360, 11144, 13930, 14726, 27860, 29452, 36815, 51541, 55720, 58904, 73630, 103082, 147260, 206164, 257705, 294520, 412328, 515410, 1030820, 2061640]

約数ペア:

[(1, 2061640), (2, 1030820), (4, 515410), (5, 412328), (7, 294520), (8, 257705), (10, 206164), (14, 147260), (20, 103082), (28, 73630), (35, 58904), (37, 55720), (40, 51541), (56, 36815), (70, 29452), (74, 27860), (140, 14726), (148, 13930), (185, 11144), (199, 10360), (259, 7960), (280, 7363), (296, 6965), (370, 5572), (398, 5180), (518, 3980), (740, 2786), (796, 2590), (995, 2072), (1036, 1990), (1295, 1592), (1393, 1480)]