20870722

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{1279}}^1$

素因数の和:1521

約数の個数: 16

約数和(自身を含む): 32256000

約数和(自身を除く): 11385278

約数列:

[1, 2, 41, 82, 199, 398, 1279, 2558, 8159, 16318, 52439, 104878, 254521, 509042, 10435361, 20870722]

約数ペア:

[(1, 20870722), (2, 10435361), (41, 509042), (82, 254521), (199, 104878), (398, 52439), (1279, 16318), (2558, 8159)]