221575040

素因数分解:

$2^7\times 5^1\times {\mathrm{461}}^1\times {\mathrm{751}}^1$

素因数の和:1231

約数の個数: 64

約数和(自身を含む): 531558720

約数和(自身を除く): 309983680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 461, 640, 751, 922, 1502, 1844, 2305, 3004, 3688, 3755, 4610, 6008, 7376, 7510, 9220, 12016, 14752, 15020, 18440, 24032, 29504, 30040, 36880, 48064, 59008, 60080, 73760, 96128, 120160, 147520, 240320, 295040, 346211, 480640, 692422, 1384844, 1731055, 2769688, 3462110, 5539376, 6924220, 11078752, 13848440, 22157504, 27696880, 44315008, 55393760, 110787520, 221575040]

約数ペア:

[(1, 221575040), (2, 110787520), (4, 55393760), (5, 44315008), (8, 27696880), (10, 22157504), (16, 13848440), (20, 11078752), (32, 6924220), (40, 5539376), (64, 3462110), (80, 2769688), (128, 1731055), (160, 1384844), (320, 692422), (461, 480640), (640, 346211), (751, 295040), (922, 240320), (1502, 147520), (1844, 120160), (2305, 96128), (3004, 73760), (3688, 60080), (3755, 59008), (4610, 48064), (6008, 36880), (7376, 30040), (7510, 29504), (9220, 24032), (12016, 18440), (14752, 15020)]