78857080

素因数分解:

$2^3\times 5^1\times {\mathrm{1971427}}^1$

素因数の和:1971438

約数の個数: 16

約数和(自身を含む): 177428520

約数和(自身を除く): 98571440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1971427, 3942854, 7885708, 9857135, 15771416, 19714270, 39428540, 78857080]

約数ペア:

[(1, 78857080), (2, 39428540), (4, 19714270), (5, 15771416), (8, 9857135), (10, 7885708), (20, 3942854), (40, 1971427)]