128096560

素因数分解:

$2^4\times 5^1\times {\mathrm{1601207}}^1$

素因数の和:1601220

約数の個数: 20

約数和(自身を含む): 297824688

約数和(自身を除く): 169728128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1601207, 3202414, 6404828, 8006035, 12809656, 16012070, 25619312, 32024140, 64048280, 128096560]

約数ペア:

[(1, 128096560), (2, 64048280), (4, 32024140), (5, 25619312), (8, 16012070), (10, 12809656), (16, 8006035), (20, 6404828), (40, 3202414), (80, 1601207)]