8207720

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{457}}^1$

素因数の和:917

約数の個数: 32

約数和(自身を含む): 18549000

約数和(自身を除く): 10341280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 457, 898, 914, 1796, 1828, 2245, 2285, 3592, 3656, 4490, 4570, 8980, 9140, 17960, 18280, 205193, 410386, 820772, 1025965, 1641544, 2051930, 4103860, 8207720]

約数ペア:

[(1, 8207720), (2, 4103860), (4, 2051930), (5, 1641544), (8, 1025965), (10, 820772), (20, 410386), (40, 205193), (449, 18280), (457, 17960), (898, 9140), (914, 8980), (1796, 4570), (1828, 4490), (2245, 3656), (2285, 3592)]