218398719

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4751}}^1$

素因数の和:4971

約数の個数: 32

約数和(自身を含む): 364953600

約数和(自身を除く): 146554881

約数列:

[1, 3, 7, 11, 21, 33, 77, 199, 231, 597, 1393, 2189, 4179, 4751, 6567, 14253, 15323, 33257, 45969, 52261, 99771, 156783, 365827, 945449, 1097481, 2836347, 6618143, 10399939, 19854429, 31199817, 72799573, 218398719]

約数ペア:

[(1, 218398719), (3, 72799573), (7, 31199817), (11, 19854429), (21, 10399939), (33, 6618143), (77, 2836347), (199, 1097481), (231, 945449), (597, 365827), (1393, 156783), (2189, 99771), (4179, 52261), (4751, 45969), (6567, 33257), (14253, 15323)]