198479920

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{16651}}^1$

素因数の和:16813

約数の個数: 40

約数和(自身を含む): 464590800

約数和(自身を除く): 266110880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 2384, 2980, 5960, 11920, 16651, 33302, 66604, 83255, 133208, 166510, 266416, 333020, 666040, 1332080, 2480999, 4961998, 9923996, 12404995, 19847992, 24809990, 39695984, 49619980, 99239960, 198479920]

約数ペア:

[(1, 198479920), (2, 99239960), (4, 49619980), (5, 39695984), (8, 24809990), (10, 19847992), (16, 12404995), (20, 9923996), (40, 4961998), (80, 2480999), (149, 1332080), (298, 666040), (596, 333020), (745, 266416), (1192, 166510), (1490, 133208), (2384, 83255), (2980, 66604), (5960, 33302), (11920, 16651)]