28686447

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{281}}^1$

素因数の和:508

約数の個数: 32

約数和(自身を含む): 45120000

約数和(自身を除く): 16433553

約数列:

[1, 3, 9, 19, 27, 57, 171, 199, 281, 513, 597, 843, 1791, 2529, 3781, 5339, 5373, 7587, 11343, 16017, 34029, 48051, 55919, 102087, 144153, 167757, 503271, 1062461, 1509813, 3187383, 9562149, 28686447]

約数ペア:

[(1, 28686447), (3, 9562149), (9, 3187383), (19, 1509813), (27, 1062461), (57, 503271), (171, 167757), (199, 144153), (281, 102087), (513, 55919), (597, 48051), (843, 34029), (1791, 16017), (2529, 11343), (3781, 7587), (5339, 5373)]