39998005

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{659}}^1$

素因数の和:924

約数の個数: 16

約数和(自身を含む): 49104000

約数和(自身を除く): 9105995

約数列:

[1, 5, 61, 199, 305, 659, 995, 3295, 12139, 40199, 60695, 131141, 200995, 655705, 7999601, 39998005]

約数ペア:

[(1, 39998005), (5, 7999601), (61, 655705), (199, 200995), (305, 131141), (659, 60695), (995, 40199), (3295, 12139)]