28353213

素因数分解:

$3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{739}}^1$

素因数の和:791

約数の個数: 48

約数和(自身を含む): 50616000

約数和(自身を除く): 22262787

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 87, 147, 189, 203, 261, 441, 609, 739, 783, 1323, 1421, 1827, 2217, 4263, 5173, 5481, 6651, 12789, 15519, 19953, 21431, 36211, 38367, 46557, 64293, 108633, 139671, 150017, 192879, 325899, 450051, 578637, 977697, 1050119, 1350153, 3150357, 4050459, 9451071, 28353213]

約数ペア:

[(1, 28353213), (3, 9451071), (7, 4050459), (9, 3150357), (21, 1350153), (27, 1050119), (29, 977697), (49, 578637), (63, 450051), (87, 325899), (147, 192879), (189, 150017), (203, 139671), (261, 108633), (441, 64293), (609, 46557), (739, 38367), (783, 36211), (1323, 21431), (1421, 19953), (1827, 15519), (2217, 12789), (4263, 6651), (5173, 5481)]