21778680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2357}}^1$

素因数の和:2389

約数の個数: 128

約数和(自身を含む): 81492480

約数和(自身を除く): 59713800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2310, 2357, 3080, 4620, 4714, 7071, 9240, 9428, 11785, 14142, 16499, 18856, 23570, 25927, 28284, 32998, 35355, 47140, 49497, 51854, 56568, 65996, 70710, 77781, 82495, 94280, 98994, 103708, 129635, 131992, 141420, 155562, 164990, 181489, 197988, 207416, 247485, 259270, 282840, 311124, 329980, 362978, 388905, 395976, 494970, 518540, 544467, 622248, 659960, 725956, 777810, 907445, 989940, 1037080, 1088934, 1451912, 1555620, 1814890, 1979880, 2177868, 2722335, 3111240, 3629780, 4355736, 5444670, 7259560, 10889340, 21778680]

約数ペア:

[(1, 21778680), (2, 10889340), (3, 7259560), (4, 5444670), (5, 4355736), (6, 3629780), (7, 3111240), (8, 2722335), (10, 2177868), (11, 1979880), (12, 1814890), (14, 1555620), (15, 1451912), (20, 1088934), (21, 1037080), (22, 989940), (24, 907445), (28, 777810), (30, 725956), (33, 659960), (35, 622248), (40, 544467), (42, 518540), (44, 494970), (55, 395976), (56, 388905), (60, 362978), (66, 329980), (70, 311124), (77, 282840), (84, 259270), (88, 247485), (105, 207416), (110, 197988), (120, 181489), (132, 164990), (140, 155562), (154, 141420), (165, 131992), (168, 129635), (210, 103708), (220, 98994), (231, 94280), (264, 82495), (280, 77781), (308, 70710), (330, 65996), (385, 56568), (420, 51854), (440, 49497), (462, 47140), (616, 35355), (660, 32998), (770, 28284), (840, 25927), (924, 23570), (1155, 18856), (1320, 16499), (1540, 14142), (1848, 11785), (2310, 9428), (2357, 9240), (3080, 7071), (4620, 4714)]