19681299

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 33196800

約数和(自身を除く): 13515501

約数列:

[1, 3, 9, 11, 27, 33, 37, 81, 99, 111, 199, 243, 297, 333, 407, 597, 891, 999, 1221, 1791, 2189, 2673, 2997, 3663, 5373, 6567, 7363, 8991, 10989, 16119, 19701, 22089, 32967, 48357, 59103, 66267, 80993, 98901, 177309, 198801, 242979, 531927, 596403, 728937, 1789209, 2186811, 6560433, 19681299]

約数ペア:

[(1, 19681299), (3, 6560433), (9, 2186811), (11, 1789209), (27, 728937), (33, 596403), (37, 531927), (81, 242979), (99, 198801), (111, 177309), (199, 98901), (243, 80993), (297, 66267), (333, 59103), (407, 48357), (597, 32967), (891, 22089), (999, 19701), (1221, 16119), (1791, 10989), (2189, 8991), (2673, 7363), (2997, 6567), (3663, 5373)]