21977340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:168

約数の個数: 192

約数和(自身を含む): 78962688

約数和(自身を除く): 56985348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 67, 70, 71, 77, 84, 105, 110, 132, 134, 140, 142, 154, 165, 201, 210, 213, 220, 231, 268, 284, 308, 330, 335, 355, 385, 402, 420, 426, 462, 469, 497, 660, 670, 710, 737, 770, 781, 804, 852, 924, 938, 994, 1005, 1065, 1155, 1340, 1407, 1420, 1474, 1491, 1540, 1562, 1876, 1988, 2010, 2130, 2211, 2310, 2343, 2345, 2485, 2814, 2948, 2982, 3124, 3685, 3905, 4020, 4260, 4422, 4620, 4686, 4690, 4757, 4970, 5159, 5467, 5628, 5964, 7035, 7370, 7455, 7810, 8844, 9372, 9380, 9514, 9940, 10318, 10934, 11055, 11715, 14070, 14271, 14740, 14910, 15477, 15620, 16401, 19028, 20636, 21868, 22110, 23430, 23785, 25795, 27335, 28140, 28542, 29820, 30954, 32802, 33299, 44220, 46860, 47570, 51590, 52327, 54670, 57084, 61908, 65604, 66598, 71355, 77385, 82005, 95140, 99897, 103180, 104654, 109340, 133196, 142710, 154770, 156981, 164010, 166495, 199794, 209308, 261635, 285420, 309540, 313962, 328020, 332990, 366289, 399588, 499485, 523270, 627924, 665980, 732578, 784905, 998970, 1046540, 1098867, 1465156, 1569810, 1831445, 1997940, 2197734, 3139620, 3662890, 4395468, 5494335, 7325780, 10988670, 21977340]

約数ペア:

[(1, 21977340), (2, 10988670), (3, 7325780), (4, 5494335), (5, 4395468), (6, 3662890), (7, 3139620), (10, 2197734), (11, 1997940), (12, 1831445), (14, 1569810), (15, 1465156), (20, 1098867), (21, 1046540), (22, 998970), (28, 784905), (30, 732578), (33, 665980), (35, 627924), (42, 523270), (44, 499485), (55, 399588), (60, 366289), (66, 332990), (67, 328020), (70, 313962), (71, 309540), (77, 285420), (84, 261635), (105, 209308), (110, 199794), (132, 166495), (134, 164010), (140, 156981), (142, 154770), (154, 142710), (165, 133196), (201, 109340), (210, 104654), (213, 103180), (220, 99897), (231, 95140), (268, 82005), (284, 77385), (308, 71355), (330, 66598), (335, 65604), (355, 61908), (385, 57084), (402, 54670), (420, 52327), (426, 51590), (462, 47570), (469, 46860), (497, 44220), (660, 33299), (670, 32802), (710, 30954), (737, 29820), (770, 28542), (781, 28140), (804, 27335), (852, 25795), (924, 23785), (938, 23430), (994, 22110), (1005, 21868), (1065, 20636), (1155, 19028), (1340, 16401), (1407, 15620), (1420, 15477), (1474, 14910), (1491, 14740), (1540, 14271), (1562, 14070), (1876, 11715), (1988, 11055), (2010, 10934), (2130, 10318), (2211, 9940), (2310, 9514), (2343, 9380), (2345, 9372), (2485, 8844), (2814, 7810), (2948, 7455), (2982, 7370), (3124, 7035), (3685, 5964), (3905, 5628), (4020, 5467), (4260, 5159), (4422, 4970), (4620, 4757), (4686, 4690)]