18121275

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1873}}^1$

素因数の和:1932

約数の個数: 36

約数和(自身を含む): 33229768

約数和(自身を除く): 15108493

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1873, 1935, 3225, 5619, 9365, 9675, 16857, 28095, 46825, 80539, 84285, 140475, 241617, 402695, 421425, 724851, 1208085, 2013475, 3624255, 6040425, 18121275]

約数ペア:

[(1, 18121275), (3, 6040425), (5, 3624255), (9, 2013475), (15, 1208085), (25, 724851), (43, 421425), (45, 402695), (75, 241617), (129, 140475), (215, 84285), (225, 80539), (387, 46825), (645, 28095), (1075, 16857), (1873, 9675), (1935, 9365), (3225, 5619)]