19399779

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{853}}^1$

素因数の和:904

約数の個数: 36

約数和(自身を含む): 33838896

約数和(自身を除く): 14439117

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 361, 399, 853, 1083, 1197, 2527, 2559, 3249, 5971, 7581, 7677, 16207, 17913, 22743, 48621, 53739, 113449, 145863, 307933, 340347, 923799, 1021041, 2155531, 2771397, 6466593, 19399779]

約数ペア:

[(1, 19399779), (3, 6466593), (7, 2771397), (9, 2155531), (19, 1021041), (21, 923799), (57, 340347), (63, 307933), (133, 145863), (171, 113449), (361, 53739), (399, 48621), (853, 22743), (1083, 17913), (1197, 16207), (2527, 7677), (2559, 7581), (3249, 5971)]