64826500

素因数分解:

$2^2\times 5^3\times {\mathrm{317}}^1\times {\mathrm{409}}^1$

素因数の和:745

約数の個数: 48

約数和(自身を含む): 142374960

約数和(自身を除く): 77548460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 317, 409, 500, 634, 818, 1268, 1585, 1636, 2045, 3170, 4090, 6340, 7925, 8180, 10225, 15850, 20450, 31700, 39625, 40900, 51125, 79250, 102250, 129653, 158500, 204500, 259306, 518612, 648265, 1296530, 2593060, 3241325, 6482650, 12965300, 16206625, 32413250, 64826500]

約数ペア:

[(1, 64826500), (2, 32413250), (4, 16206625), (5, 12965300), (10, 6482650), (20, 3241325), (25, 2593060), (50, 1296530), (100, 648265), (125, 518612), (250, 259306), (317, 204500), (409, 158500), (500, 129653), (634, 102250), (818, 79250), (1268, 51125), (1585, 40900), (1636, 39625), (2045, 31700), (3170, 20450), (4090, 15850), (6340, 10225), (7925, 8180)]