4015820

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1009}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 8484000

約数和(自身を除く): 4468180

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1009, 1990, 2018, 3980, 4036, 5045, 10090, 20180, 200791, 401582, 803164, 1003955, 2007910, 4015820]

約数ペア:

[(1, 4015820), (2, 2007910), (4, 1003955), (5, 803164), (10, 401582), (20, 200791), (199, 20180), (398, 10090), (796, 5045), (995, 4036), (1009, 3980), (1990, 2018)]