128792240

素因数分解:

$2^4\times 5^1\times {\mathrm{1609903}}^1$

素因数の和:1609916

約数の個数: 20

約数和(自身を含む): 299442144

約数和(自身を除く): 170649904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1609903, 3219806, 6439612, 8049515, 12879224, 16099030, 25758448, 32198060, 64396120, 128792240]

約数ペア:

[(1, 128792240), (2, 64396120), (4, 32198060), (5, 25758448), (8, 16099030), (10, 12879224), (16, 8049515), (20, 6439612), (40, 3219806), (80, 1609903)]