128210440

素因数分解:

$2^3\times 5^1\times {\mathrm{3205261}}^1$

素因数の和:3205272

約数の個数: 16

約数和(自身を含む): 288473580

約数和(自身を除く): 160263140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3205261, 6410522, 12821044, 16026305, 25642088, 32052610, 64105220, 128210440]

約数ペア:

[(1, 128210440), (2, 64105220), (4, 32052610), (5, 25642088), (8, 16026305), (10, 12821044), (20, 6410522), (40, 3205261)]