21139920

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9787}}^1$

素因数の和:9809

約数の個数: 80

約数和(自身を含む): 72822720

約数和(自身を除く): 51682800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9787, 19574, 29361, 39148, 48935, 58722, 78296, 88083, 97870, 117444, 146805, 156592, 176166, 195740, 234888, 264249, 293610, 352332, 391480, 440415, 469776, 528498, 587220, 704664, 782960, 880830, 1056996, 1174440, 1321245, 1409328, 1761660, 2113992, 2348880, 2642490, 3523320, 4227984, 5284980, 7046640, 10569960, 21139920]

約数ペア:

[(1, 21139920), (2, 10569960), (3, 7046640), (4, 5284980), (5, 4227984), (6, 3523320), (8, 2642490), (9, 2348880), (10, 2113992), (12, 1761660), (15, 1409328), (16, 1321245), (18, 1174440), (20, 1056996), (24, 880830), (27, 782960), (30, 704664), (36, 587220), (40, 528498), (45, 469776), (48, 440415), (54, 391480), (60, 352332), (72, 293610), (80, 264249), (90, 234888), (108, 195740), (120, 176166), (135, 156592), (144, 146805), (180, 117444), (216, 97870), (240, 88083), (270, 78296), (360, 58722), (432, 48935), (540, 39148), (720, 29361), (1080, 19574), (2160, 9787)]