18087909

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{4243}}^1$

素因数の和:4289

約数の個数: 24

約数和(自身を含む): 29028960

約数和(自身を除く): 10941051

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4243, 4263, 12729, 29701, 89103, 123047, 207907, 369141, 623721, 861329, 2583987, 6029303, 18087909]

約数ペア:

[(1, 18087909), (3, 6029303), (7, 2583987), (21, 861329), (29, 623721), (49, 369141), (87, 207907), (147, 123047), (203, 89103), (609, 29701), (1421, 12729), (4243, 4263)]