7988004

素因数分解:

$2^2\times 3^3\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2049

約数の個数: 48

約数和(自身を含む): 21280000

約数和(自身を除く): 13291996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 37, 54, 74, 108, 111, 148, 222, 333, 444, 666, 999, 1332, 1998, 1999, 3996, 3998, 5997, 7996, 11994, 17991, 23988, 35982, 53973, 71964, 73963, 107946, 147926, 215892, 221889, 295852, 443778, 665667, 887556, 1331334, 1997001, 2662668, 3994002, 7988004]

約数ペア:

[(1, 7988004), (2, 3994002), (3, 2662668), (4, 1997001), (6, 1331334), (9, 887556), (12, 665667), (18, 443778), (27, 295852), (36, 221889), (37, 215892), (54, 147926), (74, 107946), (108, 73963), (111, 71964), (148, 53973), (222, 35982), (333, 23988), (444, 17991), (666, 11994), (999, 7996), (1332, 5997), (1998, 3998), (1999, 3996)]