1818860

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{457}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 3847200

約数和(自身を除く): 2028340

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 457, 796, 914, 995, 1828, 1990, 2285, 3980, 4570, 9140, 90943, 181886, 363772, 454715, 909430, 1818860]

約数ペア:

[(1, 1818860), (2, 909430), (4, 454715), (5, 363772), (10, 181886), (20, 90943), (199, 9140), (398, 4570), (457, 3980), (796, 2285), (914, 1990), (995, 1828)]