13278275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 17632800

約数和(自身を除く): 4354525

約数列:

[1, 5, 17, 25, 85, 157, 199, 425, 785, 995, 2669, 3383, 3925, 4975, 13345, 16915, 31243, 66725, 84575, 156215, 531131, 781075, 2655655, 13278275]

約数ペア:

[(1, 13278275), (5, 2655655), (17, 781075), (25, 531131), (85, 156215), (157, 84575), (199, 66725), (425, 31243), (785, 16915), (995, 13345), (2669, 4975), (3383, 3925)]