21787080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{701}}^1$

素因数の和:759

約数の個数: 128

約数和(自身を含む): 76826880

約数和(自身を除く): 55039800

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, 701, 740, 777, 840, 888, 1036, 1110, 1295, 1402, 1480, 1554, 2072, 2103, 2220, 2590, 2804, 3108, 3505, 3885, 4206, 4440, 4907, 5180, 5608, 6216, 7010, 7770, 8412, 9814, 10360, 10515, 14020, 14721, 15540, 16824, 19628, 21030, 24535, 25937, 28040, 29442, 31080, 39256, 42060, 49070, 51874, 58884, 73605, 77811, 84120, 98140, 103748, 117768, 129685, 147210, 155622, 181559, 196280, 207496, 259370, 294420, 311244, 363118, 389055, 518740, 544677, 588840, 622488, 726236, 778110, 907795, 1037480, 1089354, 1452472, 1556220, 1815590, 2178708, 2723385, 3112440, 3631180, 4357416, 5446770, 7262360, 10893540, 21787080]

約数ペア:

[(1, 21787080), (2, 10893540), (3, 7262360), (4, 5446770), (5, 4357416), (6, 3631180), (7, 3112440), (8, 2723385), (10, 2178708), (12, 1815590), (14, 1556220), (15, 1452472), (20, 1089354), (21, 1037480), (24, 907795), (28, 778110), (30, 726236), (35, 622488), (37, 588840), (40, 544677), (42, 518740), (56, 389055), (60, 363118), (70, 311244), (74, 294420), (84, 259370), (105, 207496), (111, 196280), (120, 181559), (140, 155622), (148, 147210), (168, 129685), (185, 117768), (210, 103748), (222, 98140), (259, 84120), (280, 77811), (296, 73605), (370, 58884), (420, 51874), (444, 49070), (518, 42060), (555, 39256), (701, 31080), (740, 29442), (777, 28040), (840, 25937), (888, 24535), (1036, 21030), (1110, 19628), (1295, 16824), (1402, 15540), (1480, 14721), (1554, 14020), (2072, 10515), (2103, 10360), (2220, 9814), (2590, 8412), (2804, 7770), (3108, 7010), (3505, 6216), (3885, 5608), (4206, 5180), (4440, 4907)]