78859720

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{9907}}^1$

素因数の和:10117

約数の個数: 32

約数和(自身を含む): 178344000

約数和(自身を除く): 99484280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 9907, 19814, 39628, 49535, 79256, 99070, 198140, 396280, 1971493, 3942986, 7885972, 9857465, 15771944, 19714930, 39429860, 78859720]

約数ペア:

[(1, 78859720), (2, 39429860), (4, 19714930), (5, 15771944), (8, 9857465), (10, 7885972), (20, 3942986), (40, 1971493), (199, 396280), (398, 198140), (796, 99070), (995, 79256), (1592, 49535), (1990, 39628), (3980, 19814), (7960, 9907)]