19383819

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 34728960

約数和(自身を除く): 15345141

約数列:

[1, 3, 7, 13, 19, 21, 37, 39, 57, 91, 101, 111, 133, 247, 259, 273, 303, 399, 481, 703, 707, 741, 777, 1313, 1443, 1729, 1919, 2109, 2121, 3367, 3737, 3939, 4921, 5187, 5757, 9139, 9191, 10101, 11211, 13433, 14763, 24947, 26159, 27417, 27573, 40299, 48581, 63973, 71003, 74841, 78477, 145743, 174629, 191919, 213009, 340067, 497021, 523887, 923039, 1020201, 1491063, 2769117, 6461273, 19383819]

約数ペア:

[(1, 19383819), (3, 6461273), (7, 2769117), (13, 1491063), (19, 1020201), (21, 923039), (37, 523887), (39, 497021), (57, 340067), (91, 213009), (101, 191919), (111, 174629), (133, 145743), (247, 78477), (259, 74841), (273, 71003), (303, 63973), (399, 48581), (481, 40299), (703, 27573), (707, 27417), (741, 26159), (777, 24947), (1313, 14763), (1443, 13433), (1729, 11211), (1919, 10101), (2109, 9191), (2121, 9139), (3367, 5757), (3737, 5187), (3939, 4921)]