81405840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{5749}}^1$

素因数の和:5824

約数の個数: 80

約数和(自身を含む): 256680000

約数和(自身を除く): 175274160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 59, 60, 80, 118, 120, 177, 236, 240, 295, 354, 472, 590, 708, 885, 944, 1180, 1416, 1770, 2360, 2832, 3540, 4720, 5749, 7080, 11498, 14160, 17247, 22996, 28745, 34494, 45992, 57490, 68988, 86235, 91984, 114980, 137976, 172470, 229960, 275952, 339191, 344940, 459920, 678382, 689880, 1017573, 1356764, 1379760, 1695955, 2035146, 2713528, 3391910, 4070292, 5087865, 5427056, 6783820, 8140584, 10175730, 13567640, 16281168, 20351460, 27135280, 40702920, 81405840]

約数ペア:

[(1, 81405840), (2, 40702920), (3, 27135280), (4, 20351460), (5, 16281168), (6, 13567640), (8, 10175730), (10, 8140584), (12, 6783820), (15, 5427056), (16, 5087865), (20, 4070292), (24, 3391910), (30, 2713528), (40, 2035146), (48, 1695955), (59, 1379760), (60, 1356764), (80, 1017573), (118, 689880), (120, 678382), (177, 459920), (236, 344940), (240, 339191), (295, 275952), (354, 229960), (472, 172470), (590, 137976), (708, 114980), (885, 91984), (944, 86235), (1180, 68988), (1416, 57490), (1770, 45992), (2360, 34494), (2832, 28745), (3540, 22996), (4720, 17247), (5749, 14160), (7080, 11498)]