18781245

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{547}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 37614720

約数和(自身を除く): 18833475

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 109, 315, 327, 545, 547, 763, 981, 1635, 1641, 2289, 2735, 3815, 3829, 4905, 4923, 6867, 8205, 11445, 11487, 19145, 24615, 34335, 34461, 57435, 59623, 172305, 178869, 298115, 417361, 536607, 894345, 1252083, 2086805, 2683035, 3756249, 6260415, 18781245]

約数ペア:

[(1, 18781245), (3, 6260415), (5, 3756249), (7, 2683035), (9, 2086805), (15, 1252083), (21, 894345), (35, 536607), (45, 417361), (63, 298115), (105, 178869), (109, 172305), (315, 59623), (327, 57435), (545, 34461), (547, 34335), (763, 24615), (981, 19145), (1635, 11487), (1641, 11445), (2289, 8205), (2735, 6867), (3815, 4923), (3829, 4905)]