81087720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2609}}^1$

素因数の和:2667

約数の個数: 128

約数和(自身を含む): 285638400

約数和(自身を除く): 204550680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 740, 777, 840, 888, 1036, 1110, 1295, 1480, 1554, 2072, 2220, 2590, 2609, 3108, 3885, 4440, 5180, 5218, 6216, 7770, 7827, 10360, 10436, 13045, 15540, 15654, 18263, 20872, 26090, 31080, 31308, 36526, 39135, 52180, 54789, 62616, 73052, 78270, 91315, 96533, 104360, 109578, 146104, 156540, 182630, 193066, 219156, 273945, 289599, 313080, 365260, 386132, 438312, 482665, 547890, 579198, 675731, 730520, 772264, 965330, 1095780, 1158396, 1351462, 1447995, 1930660, 2027193, 2191560, 2316792, 2702924, 2895990, 3378655, 3861320, 4054386, 5405848, 5791980, 6757310, 8108772, 10135965, 11583960, 13514620, 16217544, 20271930, 27029240, 40543860, 81087720]

約数ペア:

[(1, 81087720), (2, 40543860), (3, 27029240), (4, 20271930), (5, 16217544), (6, 13514620), (7, 11583960), (8, 10135965), (10, 8108772), (12, 6757310), (14, 5791980), (15, 5405848), (20, 4054386), (21, 3861320), (24, 3378655), (28, 2895990), (30, 2702924), (35, 2316792), (37, 2191560), (40, 2027193), (42, 1930660), (56, 1447995), (60, 1351462), (70, 1158396), (74, 1095780), (84, 965330), (105, 772264), (111, 730520), (120, 675731), (140, 579198), (148, 547890), (168, 482665), (185, 438312), (210, 386132), (222, 365260), (259, 313080), (280, 289599), (296, 273945), (370, 219156), (420, 193066), (444, 182630), (518, 156540), (555, 146104), (740, 109578), (777, 104360), (840, 96533), (888, 91315), (1036, 78270), (1110, 73052), (1295, 62616), (1480, 54789), (1554, 52180), (2072, 39135), (2220, 36526), (2590, 31308), (2609, 31080), (3108, 26090), (3885, 20872), (4440, 18263), (5180, 15654), (5218, 15540), (6216, 13045), (7770, 10436), (7827, 10360)]