78857320

素因数分解:

$2^3\times 5^1\times {\mathrm{1971433}}^1$

素因数の和:1971444

約数の個数: 16

約数和(自身を含む): 177429060

約数和(自身を除く): 98571740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1971433, 3942866, 7885732, 9857165, 15771464, 19714330, 39428660, 78857320]

約数ペア:

[(1, 78857320), (2, 39428660), (4, 19714330), (5, 15771464), (8, 9857165), (10, 7885732), (20, 3942866), (40, 1971433)]