19992320

素因数分解:

$2^8\times 5^1\times {\mathrm{15619}}^1$

素因数の和:15640

約数の個数: 36

約数和(自身を含む): 47890920

約数和(自身を除く): 27898600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15619, 31238, 62476, 78095, 124952, 156190, 249904, 312380, 499808, 624760, 999616, 1249520, 1999232, 2499040, 3998464, 4998080, 9996160, 19992320]

約数ペア:

[(1, 19992320), (2, 9996160), (4, 4998080), (5, 3998464), (8, 2499040), (10, 1999232), (16, 1249520), (20, 999616), (32, 624760), (40, 499808), (64, 312380), (80, 249904), (128, 156190), (160, 124952), (256, 78095), (320, 62476), (640, 31238), (1280, 15619)]