128210240

素因数分解:

$2^6\times 5^1\times {\mathrm{400657}}^1$

素因数の和:400674

約数の個数: 28

約数和(自身を含む): 305301396

約数和(自身を除く): 177091156

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 400657, 801314, 1602628, 2003285, 3205256, 4006570, 6410512, 8013140, 12821024, 16026280, 25642048, 32052560, 64105120, 128210240]

約数ペア:

[(1, 128210240), (2, 64105120), (4, 32052560), (5, 25642048), (8, 16026280), (10, 12821024), (16, 8013140), (20, 6410512), (32, 4006570), (40, 3205256), (64, 2003285), (80, 1602628), (160, 801314), (320, 400657)]