1268763280

素因数分解:

$2^4\times 5^1\times {\mathrm{15859541}}^1$

素因数の和:15859554

約数の個数: 20

約数和(自身を含む): 2949874812

約数和(自身を除く): 1681111532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15859541, 31719082, 63438164, 79297705, 126876328, 158595410, 253752656, 317190820, 634381640, 1268763280]

約数ペア:

[(1, 1268763280), (2, 634381640), (4, 317190820), (5, 253752656), (8, 158595410), (10, 126876328), (16, 79297705), (20, 63438164), (40, 31719082), (80, 15859541)]