21843351

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{547}}^1$

素因数の和:605

約数の個数: 40

約数和(自身を含む): 35806320

約数和(自身を除く): 13962969

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 261, 459, 493, 547, 783, 1377, 1479, 1641, 2349, 4437, 4923, 9299, 13311, 14769, 15863, 27897, 39933, 44307, 47589, 83691, 142767, 251073, 269671, 428301, 753219, 809013, 1284903, 2427039, 7281117, 21843351]

約数ペア:

[(1, 21843351), (3, 7281117), (9, 2427039), (17, 1284903), (27, 809013), (29, 753219), (51, 428301), (81, 269671), (87, 251073), (153, 142767), (261, 83691), (459, 47589), (493, 44307), (547, 39933), (783, 27897), (1377, 15863), (1479, 14769), (1641, 13311), (2349, 9299), (4437, 4923)]