19808000

素因数分解:

$2^8\times 5^3\times {\mathrm{619}}^1$

素因数の和:650

約数の個数: 72

約数和(自身を含む): 49423920

約数和(自身を除く): 29615920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 619, 640, 800, 1000, 1238, 1280, 1600, 2000, 2476, 3095, 3200, 4000, 4952, 6190, 6400, 8000, 9904, 12380, 15475, 16000, 19808, 24760, 30950, 32000, 39616, 49520, 61900, 77375, 79232, 99040, 123800, 154750, 158464, 198080, 247600, 309500, 396160, 495200, 619000, 792320, 990400, 1238000, 1980800, 2476000, 3961600, 4952000, 9904000, 19808000]

約数ペア:

[(1, 19808000), (2, 9904000), (4, 4952000), (5, 3961600), (8, 2476000), (10, 1980800), (16, 1238000), (20, 990400), (25, 792320), (32, 619000), (40, 495200), (50, 396160), (64, 309500), (80, 247600), (100, 198080), (125, 158464), (128, 154750), (160, 123800), (200, 99040), (250, 79232), (256, 77375), (320, 61900), (400, 49520), (500, 39616), (619, 32000), (640, 30950), (800, 24760), (1000, 19808), (1238, 16000), (1280, 15475), (1600, 12380), (2000, 9904), (2476, 8000), (3095, 6400), (3200, 6190), (4000, 4952)]