66879920

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4201}}^1$

素因数の和:4413

約数の個数: 40

約数和(自身を含む): 156314400

約数和(自身を除く): 89434480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 4201, 7960, 8402, 15920, 16804, 21005, 33608, 42010, 67216, 84020, 168040, 336080, 835999, 1671998, 3343996, 4179995, 6687992, 8359990, 13375984, 16719980, 33439960, 66879920]

約数ペア:

[(1, 66879920), (2, 33439960), (4, 16719980), (5, 13375984), (8, 8359990), (10, 6687992), (16, 4179995), (20, 3343996), (40, 1671998), (80, 835999), (199, 336080), (398, 168040), (796, 84020), (995, 67216), (1592, 42010), (1990, 33608), (3184, 21005), (3980, 16804), (4201, 15920), (7960, 8402)]