64721168

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{20327}}^1$

素因数の和:20534

約数の個数: 20

約数和(自身を含む): 126033600

約数和(自身を除く): 61312432

約数列:

[1, 2, 4, 8, 16, 199, 398, 796, 1592, 3184, 20327, 40654, 81308, 162616, 325232, 4045073, 8090146, 16180292, 32360584, 64721168]

約数ペア:

[(1, 64721168), (2, 32360584), (4, 16180292), (8, 8090146), (16, 4045073), (199, 325232), (398, 162616), (796, 81308), (1592, 40654), (3184, 20327)]