19940795

素因数分解:

$5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 28044000

約数和(自身を除く): 8103205

約数列:

[1, 5, 7, 35, 49, 199, 245, 409, 995, 1393, 2045, 2863, 6965, 9751, 14315, 20041, 48755, 81391, 100205, 406955, 569737, 2848685, 3988159, 19940795]

約数ペア:

[(1, 19940795), (5, 3988159), (7, 2848685), (35, 569737), (49, 406955), (199, 100205), (245, 81391), (409, 48755), (995, 20041), (1393, 14315), (2045, 9751), (2863, 6965)]