254278220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{9127}}^1$

素因数の和:9342

約数の個数: 48

約数和(自身を含む): 613401600

約数和(自身を除く): 359123380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 5572, 6965, 9127, 13930, 18254, 27860, 36508, 45635, 63889, 91270, 127778, 182540, 255556, 319445, 638890, 1277780, 1816273, 3632546, 7265092, 9081365, 12713911, 18162730, 25427822, 36325460, 50855644, 63569555, 127139110, 254278220]

約数ペア:

[(1, 254278220), (2, 127139110), (4, 63569555), (5, 50855644), (7, 36325460), (10, 25427822), (14, 18162730), (20, 12713911), (28, 9081365), (35, 7265092), (70, 3632546), (140, 1816273), (199, 1277780), (398, 638890), (796, 319445), (995, 255556), (1393, 182540), (1990, 127778), (2786, 91270), (3980, 63889), (5572, 45635), (6965, 36508), (9127, 27860), (13930, 18254)]