21338240

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{433}}^1$

素因数の和:470

約数の個数: 128

約数和(自身を含む): 63745920

約数和(自身を除く): 42407680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 128, 140, 154, 160, 176, 220, 224, 280, 308, 320, 352, 385, 433, 440, 448, 560, 616, 640, 704, 770, 866, 880, 896, 1120, 1232, 1408, 1540, 1732, 1760, 2165, 2240, 2464, 3031, 3080, 3464, 3520, 4330, 4480, 4763, 4928, 6062, 6160, 6928, 7040, 8660, 9526, 9856, 12124, 12320, 13856, 15155, 17320, 19052, 23815, 24248, 24640, 27712, 30310, 33341, 34640, 38104, 47630, 48496, 49280, 55424, 60620, 66682, 69280, 76208, 95260, 96992, 121240, 133364, 138560, 152416, 166705, 190520, 193984, 242480, 266728, 277120, 304832, 333410, 381040, 387968, 484960, 533456, 609664, 666820, 762080, 969920, 1066912, 1333640, 1524160, 1939840, 2133824, 2667280, 3048320, 4267648, 5334560, 10669120, 21338240]

約数ペア:

[(1, 21338240), (2, 10669120), (4, 5334560), (5, 4267648), (7, 3048320), (8, 2667280), (10, 2133824), (11, 1939840), (14, 1524160), (16, 1333640), (20, 1066912), (22, 969920), (28, 762080), (32, 666820), (35, 609664), (40, 533456), (44, 484960), (55, 387968), (56, 381040), (64, 333410), (70, 304832), (77, 277120), (80, 266728), (88, 242480), (110, 193984), (112, 190520), (128, 166705), (140, 152416), (154, 138560), (160, 133364), (176, 121240), (220, 96992), (224, 95260), (280, 76208), (308, 69280), (320, 66682), (352, 60620), (385, 55424), (433, 49280), (440, 48496), (448, 47630), (560, 38104), (616, 34640), (640, 33341), (704, 30310), (770, 27712), (866, 24640), (880, 24248), (896, 23815), (1120, 19052), (1232, 17320), (1408, 15155), (1540, 13856), (1732, 12320), (1760, 12124), (2165, 9856), (2240, 9526), (2464, 8660), (3031, 7040), (3080, 6928), (3464, 6160), (3520, 6062), (4330, 4928), (4480, 4763)]