12021219

素因数分解:

$3^2\times 7^2\times {\mathrm{27259}}^1$

素因数の和:27279

約数の個数: 18

約数和(自身を含む): 20199660

約数和(自身を除く): 8178441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 27259, 81777, 190813, 245331, 572439, 1335691, 1717317, 4007073, 12021219]

約数ペア:

[(1, 12021219), (3, 4007073), (7, 1717317), (9, 1335691), (21, 572439), (49, 245331), (63, 190813), (147, 81777), (441, 27259)]