20717475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16249}}^1$

素因数の和:16279

約数の個数: 24

約数和(自身を含む): 36270000

約数和(自身を除く): 15552525

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16249, 48747, 81245, 243735, 276233, 406225, 828699, 1218675, 1381165, 4143495, 6905825, 20717475]

約数ペア:

[(1, 20717475), (3, 6905825), (5, 4143495), (15, 1381165), (17, 1218675), (25, 828699), (51, 406225), (75, 276233), (85, 243735), (255, 81245), (425, 48747), (1275, 16249)]