78125680

素因数分解:

$2^4\times 5^1\times {\mathrm{976571}}^1$

素因数の和:976584

約数の個数: 20

約数和(自身を含む): 181642392

約数和(自身を除く): 103516712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 976571, 1953142, 3906284, 4882855, 7812568, 9765710, 15625136, 19531420, 39062840, 78125680]

約数ペア:

[(1, 78125680), (2, 39062840), (4, 19531420), (5, 15625136), (8, 9765710), (10, 7812568), (16, 4882855), (20, 3906284), (40, 1953142), (80, 976571)]