20806976645

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2141}}^1$

素因数の和:2263

約数の個数: 96

約数和(自身を含む): 32512886784

約数和(自身を除く): 11705910139

約数列:

[1, 5, 7, 13, 31, 35, 53, 65, 91, 155, 169, 217, 265, 371, 403, 455, 689, 845, 1085, 1183, 1643, 1855, 2015, 2141, 2821, 3445, 4823, 5239, 5915, 8215, 8957, 10705, 11501, 14105, 14987, 21359, 24115, 26195, 27833, 36673, 44785, 57505, 62699, 66371, 74935, 106795, 113473, 139165, 149513, 183365, 194831, 277667, 313495, 331855, 361829, 464597, 567365, 747565, 794311, 862823, 974155, 1388335, 1475149, 1809145, 1943669, 2322985, 2532803, 3517663, 3971555, 4314115, 6039761, 7375745, 9718345, 10326043, 11216699, 12664015, 17588315, 19176937, 24623641, 30198805, 45729619, 51630215, 56083495, 78516893, 95884685, 123118205, 134238559, 228648095, 320107333, 392584465, 594485047, 671192795, 1600536665, 2972425235, 4161395329, 20806976645]

約数ペア:

[(1, 20806976645), (5, 4161395329), (7, 2972425235), (13, 1600536665), (31, 671192795), (35, 594485047), (53, 392584465), (65, 320107333), (91, 228648095), (155, 134238559), (169, 123118205), (217, 95884685), (265, 78516893), (371, 56083495), (403, 51630215), (455, 45729619), (689, 30198805), (845, 24623641), (1085, 19176937), (1183, 17588315), (1643, 12664015), (1855, 11216699), (2015, 10326043), (2141, 9718345), (2821, 7375745), (3445, 6039761), (4823, 4314115), (5239, 3971555), (5915, 3517663), (8215, 2532803), (8957, 2322985), (10705, 1943669), (11501, 1809145), (14105, 1475149), (14987, 1388335), (21359, 974155), (24115, 862823), (26195, 794311), (27833, 747565), (36673, 567365), (44785, 464597), (57505, 361829), (62699, 331855), (66371, 313495), (74935, 277667), (106795, 194831), (113473, 183365), (139165, 149513)]