266771440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1289}}^1$

素因数の和:1514

約数の個数: 80

約数和(自身を含む): 671832000

約数和(自身を除く): 405060560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 199, 208, 260, 398, 520, 796, 995, 1040, 1289, 1592, 1990, 2578, 2587, 3184, 3980, 5156, 5174, 6445, 7960, 10312, 10348, 12890, 12935, 15920, 16757, 20624, 20696, 25780, 25870, 33514, 41392, 51560, 51740, 67028, 83785, 103120, 103480, 134056, 167570, 206960, 256511, 268112, 335140, 513022, 670280, 1026044, 1282555, 1340560, 2052088, 2565110, 3334643, 4104176, 5130220, 6669286, 10260440, 13338572, 16673215, 20520880, 26677144, 33346430, 53354288, 66692860, 133385720, 266771440]

約数ペア:

[(1, 266771440), (2, 133385720), (4, 66692860), (5, 53354288), (8, 33346430), (10, 26677144), (13, 20520880), (16, 16673215), (20, 13338572), (26, 10260440), (40, 6669286), (52, 5130220), (65, 4104176), (80, 3334643), (104, 2565110), (130, 2052088), (199, 1340560), (208, 1282555), (260, 1026044), (398, 670280), (520, 513022), (796, 335140), (995, 268112), (1040, 256511), (1289, 206960), (1592, 167570), (1990, 134056), (2578, 103480), (2587, 103120), (3184, 83785), (3980, 67028), (5156, 51740), (5174, 51560), (6445, 41392), (7960, 33514), (10312, 25870), (10348, 25780), (12890, 20696), (12935, 20624), (15920, 16757)]