639057172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{7793}}^1$

素因数の和:7912

約数の個数: 48

約数和(自身を含む): 1283204160

約数和(自身を除く): 644146988

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 83, 166, 247, 332, 494, 988, 1079, 1577, 2158, 3154, 4316, 6308, 7793, 15586, 20501, 31172, 41002, 82004, 101309, 148067, 202618, 296134, 405236, 592268, 646819, 1293638, 1924871, 2587276, 3849742, 7699484, 8408647, 12289561, 16817294, 24579122, 33634588, 49158244, 159764293, 319528586, 639057172]

約数ペア:

[(1, 639057172), (2, 319528586), (4, 159764293), (13, 49158244), (19, 33634588), (26, 24579122), (38, 16817294), (52, 12289561), (76, 8408647), (83, 7699484), (166, 3849742), (247, 2587276), (332, 1924871), (494, 1293638), (988, 646819), (1079, 592268), (1577, 405236), (2158, 296134), (3154, 202618), (4316, 148067), (6308, 101309), (7793, 82004), (15586, 41002), (20501, 31172)]