20691224

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{317}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 40068000

約数和(自身を除く): 19376776

約数列:

[1, 2, 4, 8, 41, 82, 164, 199, 317, 328, 398, 634, 796, 1268, 1592, 2536, 8159, 12997, 16318, 25994, 32636, 51988, 63083, 65272, 103976, 126166, 252332, 504664, 2586403, 5172806, 10345612, 20691224]

約数ペア:

[(1, 20691224), (2, 10345612), (4, 5172806), (8, 2586403), (41, 504664), (82, 252332), (164, 126166), (199, 103976), (317, 65272), (328, 63083), (398, 51988), (634, 32636), (796, 25994), (1268, 16318), (1592, 12997), (2536, 8159)]