7891440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:398

約数の個数: 80

約数和(自身を含む): 24748416

約数和(自身を除く): 16856976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 251, 262, 393, 502, 524, 655, 753, 786, 1004, 1048, 1255, 1310, 1506, 1572, 1965, 2008, 2096, 2510, 2620, 3012, 3144, 3765, 3930, 4016, 5020, 5240, 6024, 6288, 7530, 7860, 10040, 10480, 12048, 15060, 15720, 20080, 30120, 31440, 32881, 60240, 65762, 98643, 131524, 164405, 197286, 263048, 328810, 394572, 493215, 526096, 657620, 789144, 986430, 1315240, 1578288, 1972860, 2630480, 3945720, 7891440]

約数ペア:

[(1, 7891440), (2, 3945720), (3, 2630480), (4, 1972860), (5, 1578288), (6, 1315240), (8, 986430), (10, 789144), (12, 657620), (15, 526096), (16, 493215), (20, 394572), (24, 328810), (30, 263048), (40, 197286), (48, 164405), (60, 131524), (80, 98643), (120, 65762), (131, 60240), (240, 32881), (251, 31440), (262, 30120), (393, 20080), (502, 15720), (524, 15060), (655, 12048), (753, 10480), (786, 10040), (1004, 7860), (1048, 7530), (1255, 6288), (1310, 6024), (1506, 5240), (1572, 5020), (1965, 4016), (2008, 3930), (2096, 3765), (2510, 3144), (2620, 3012)]