180988000

素因数分解:

$2^5\times 5^3\times {\mathrm{45247}}^1$

素因数の和:45272

約数の個数: 48

約数和(自身を含む): 444697344

約数和(自身を除く): 263709344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 45247, 90494, 180988, 226235, 361976, 452470, 723952, 904940, 1131175, 1447904, 1809880, 2262350, 3619760, 4524700, 5655875, 7239520, 9049400, 11311750, 18098800, 22623500, 36197600, 45247000, 90494000, 180988000]

約数ペア:

[(1, 180988000), (2, 90494000), (4, 45247000), (5, 36197600), (8, 22623500), (10, 18098800), (16, 11311750), (20, 9049400), (25, 7239520), (32, 5655875), (40, 4524700), (50, 3619760), (80, 2262350), (100, 1809880), (125, 1447904), (160, 1131175), (200, 904940), (250, 723952), (400, 452470), (500, 361976), (800, 226235), (1000, 180988), (2000, 90494), (4000, 45247)]