20421360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:383

約数の個数: 120

約数和(自身を含む): 69464304

約数和(自身を除く): 49042944

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 113, 120, 144, 180, 226, 240, 251, 339, 360, 452, 502, 565, 678, 720, 753, 904, 1004, 1017, 1130, 1255, 1356, 1506, 1695, 1808, 2008, 2034, 2259, 2260, 2510, 2712, 3012, 3390, 3765, 4016, 4068, 4518, 4520, 5020, 5085, 5424, 6024, 6780, 7530, 8136, 9036, 9040, 10040, 10170, 11295, 12048, 13560, 15060, 16272, 18072, 20080, 20340, 22590, 27120, 28363, 30120, 36144, 40680, 45180, 56726, 60240, 81360, 85089, 90360, 113452, 141815, 170178, 180720, 226904, 255267, 283630, 340356, 425445, 453808, 510534, 567260, 680712, 850890, 1021068, 1134520, 1276335, 1361424, 1701780, 2042136, 2269040, 2552670, 3403560, 4084272, 5105340, 6807120, 10210680, 20421360]

約数ペア:

[(1, 20421360), (2, 10210680), (3, 6807120), (4, 5105340), (5, 4084272), (6, 3403560), (8, 2552670), (9, 2269040), (10, 2042136), (12, 1701780), (15, 1361424), (16, 1276335), (18, 1134520), (20, 1021068), (24, 850890), (30, 680712), (36, 567260), (40, 510534), (45, 453808), (48, 425445), (60, 340356), (72, 283630), (80, 255267), (90, 226904), (113, 180720), (120, 170178), (144, 141815), (180, 113452), (226, 90360), (240, 85089), (251, 81360), (339, 60240), (360, 56726), (452, 45180), (502, 40680), (565, 36144), (678, 30120), (720, 28363), (753, 27120), (904, 22590), (1004, 20340), (1017, 20080), (1130, 18072), (1255, 16272), (1356, 15060), (1506, 13560), (1695, 12048), (1808, 11295), (2008, 10170), (2034, 10040), (2259, 9040), (2260, 9036), (2510, 8136), (2712, 7530), (3012, 6780), (3390, 6024), (3765, 5424), (4016, 5085), (4068, 5020), (4518, 4520)]