7980012

素因数分解:

$2^2\times 3^3\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2047

約数の個数: 48

約数和(自身を含む): 21258720

約数和(自身を除く): 13278708

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, 1997, 1998, 3994, 3996, 5991, 7988, 11982, 17973, 23964, 35946, 53919, 71892, 73889, 107838, 147778, 215676, 221667, 295556, 443334, 665001, 886668, 1330002, 1995003, 2660004, 3990006, 7980012]

約数ペア:

[(1, 7980012), (2, 3990006), (3, 2660004), (4, 1995003), (6, 1330002), (9, 886668), (12, 665001), (18, 443334), (27, 295556), (36, 221667), (37, 215676), (54, 147778), (74, 107838), (108, 73889), (111, 71892), (148, 53919), (222, 35946), (333, 23964), (444, 17973), (666, 11982), (999, 7988), (1332, 5991), (1997, 3996), (1998, 3994)]