12987400

素因数分解:

$2^3\times 5^2\times {\mathrm{64937}}^1$

素因数の和:64953

約数の個数: 24

約数和(自身を含む): 30196170

約数和(自身を除く): 17208770

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 64937, 129874, 259748, 324685, 519496, 649370, 1298740, 1623425, 2597480, 3246850, 6493700, 12987400]

約数ペア:

[(1, 12987400), (2, 6493700), (4, 3246850), (5, 2597480), (8, 1623425), (10, 1298740), (20, 649370), (25, 519496), (40, 324685), (50, 259748), (100, 129874), (200, 64937)]