18170425

素因数分解:

$5^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:207

約数の個数: 48

約数和(自身を含む): 28470400

約数和(自身を除く): 10299975

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 163, 175, 245, 325, 343, 455, 637, 815, 1141, 1225, 1715, 2119, 2275, 3185, 4075, 4459, 5705, 7987, 8575, 10595, 14833, 15925, 22295, 28525, 39935, 52975, 55909, 74165, 103831, 111475, 199675, 279545, 370825, 519155, 726817, 1397725, 2595775, 3634085, 18170425]

約数ペア:

[(1, 18170425), (5, 3634085), (7, 2595775), (13, 1397725), (25, 726817), (35, 519155), (49, 370825), (65, 279545), (91, 199675), (163, 111475), (175, 103831), (245, 74165), (325, 55909), (343, 52975), (455, 39935), (637, 28525), (815, 22295), (1141, 15925), (1225, 14833), (1715, 10595), (2119, 8575), (2275, 7987), (3185, 5705), (4075, 4459)]