20508940

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{5153}}^1$

素因数の和:5361

約数の個数: 24

約数和(自身を含む): 43293600

約数和(自身を除く): 22784660

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 5153, 10306, 20612, 25765, 51530, 103060, 1025447, 2050894, 4101788, 5127235, 10254470, 20508940]

約数ペア:

[(1, 20508940), (2, 10254470), (4, 5127235), (5, 4101788), (10, 2050894), (20, 1025447), (199, 103060), (398, 51530), (796, 25765), (995, 20612), (1990, 10306), (3980, 5153)]