20675475

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2137}}^1$

素因数の和:2196

約数の個数: 36

約数和(自身を含む): 37911016

約数和(自身を除く): 17235541

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2137, 3225, 6411, 9675, 10685, 19233, 32055, 53425, 91891, 96165, 160275, 275673, 459455, 480825, 827019, 1378365, 2297275, 4135095, 6891825, 20675475]

約数ペア:

[(1, 20675475), (3, 6891825), (5, 4135095), (9, 2297275), (15, 1378365), (25, 827019), (43, 480825), (45, 459455), (75, 275673), (129, 160275), (215, 96165), (225, 91891), (387, 53425), (645, 32055), (1075, 19233), (1935, 10685), (2137, 9675), (3225, 6411)]