640150719

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1\times {\mathrm{857}}^1$

素因数の和:1159

約数の個数: 32

約数和(自身を含む): 934053120

約数和(自身を除く): 293902401

約数列:

[1, 3, 13, 39, 107, 179, 321, 537, 857, 1391, 2327, 2571, 4173, 6981, 11141, 19153, 33423, 57459, 91699, 153403, 248989, 275097, 460209, 746967, 1192087, 1994239, 3576261, 5982717, 16414121, 49242363, 213383573, 640150719]

約数ペア:

[(1, 640150719), (3, 213383573), (13, 49242363), (39, 16414121), (107, 5982717), (179, 3576261), (321, 1994239), (537, 1192087), (857, 746967), (1391, 460209), (2327, 275097), (2571, 248989), (4173, 153403), (6981, 91699), (11141, 57459), (19153, 33423)]