18682425

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1931}}^1$

素因数の和:1990

約数の個数: 36

約数和(自身を含む): 34258224

約数和(自身を除く): 15575799

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1931, 1935, 3225, 5793, 9655, 9675, 17379, 28965, 48275, 83033, 86895, 144825, 249099, 415165, 434475, 747297, 1245495, 2075825, 3736485, 6227475, 18682425]

約数ペア:

[(1, 18682425), (3, 6227475), (5, 3736485), (9, 2075825), (15, 1245495), (25, 747297), (43, 434475), (45, 415165), (75, 249099), (129, 144825), (215, 86895), (225, 83033), (387, 48275), (645, 28965), (1075, 17379), (1931, 9675), (1935, 9655), (3225, 5793)]