21351303

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 33808320

約数和(自身を除く): 12457017

約数列:

[1, 3, 9, 17, 27, 51, 153, 181, 257, 459, 543, 771, 1629, 2313, 3077, 4369, 4887, 6939, 9231, 13107, 27693, 39321, 46517, 83079, 117963, 139551, 418653, 790789, 1255959, 2372367, 7117101, 21351303]

約数ペア:

[(1, 21351303), (3, 7117101), (9, 2372367), (17, 1255959), (27, 790789), (51, 418653), (153, 139551), (181, 117963), (257, 83079), (459, 46517), (543, 39321), (771, 27693), (1629, 13107), (2313, 9231), (3077, 6939), (4369, 4887)]