12791720

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1607}}^1$

素因数の和:1817

約数の個数: 32

約数和(自身を含む): 28944000

約数和(自身を除く): 16152280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1607, 1990, 3214, 3980, 6428, 7960, 8035, 12856, 16070, 32140, 64280, 319793, 639586, 1279172, 1598965, 2558344, 3197930, 6395860, 12791720]

約数ペア:

[(1, 12791720), (2, 6395860), (4, 3197930), (5, 2558344), (8, 1598965), (10, 1279172), (20, 639586), (40, 319793), (199, 64280), (398, 32140), (796, 16070), (995, 12856), (1592, 8035), (1607, 7960), (1990, 6428), (3214, 3980)]